By Livia Wagner and Thi Hoang

   The coronavirus is not only claiming hundreds of thousands of lives, but is also causing a global economic crisis that is expected to rival or exceed that of any recession in the past 150 years. Although decisive action and containment measures are helping flatten the curve of infection, such measures inevitably deepen and lengthen the economic recession. In the worst-case scenario, the International Labour Organization (ILO) estimates that up to 25 million people will lose their jobs worldwide. Poverty, lack of social or economic opportunity and limited labour protections are the main root causes and drivers that render people vulnerable or cause them to fall victim to human trafficking. This unprecedented crisis will likely exacerbate all of those factors and result in developments (see Figure 1) that must be noted by anti human-trafficking communities and stakeholders.  

Geneva:  Global Initiative Against Transnational Organized Crime. 2020, 41pg

By Rachel Martin

Gun violence is widely considered a serious public health problem in the United States, but less understood is what this means, if anything, for evolving Second Amendment doctrine. In New York Pistol & Rifle Association, Inc. v. Bruen, the Supreme Court held that laws infringing Second Amendment rights can only be sustained if the government can point to sufficient historical analogues. Yet, what qualifies as sufficiently similar, a suitable number of jurisdictions, or the most important historical eras all remain unclear. Under Bruen, lower courts across the country have struck down gun laws at an alarming pace, while scholars and jurists continue debating the so-called true meaning of centuries-old firearm restrictions at times when slavery existed, women could not vote, and it took Thomas Jefferson longer to travel from Washington, D.C. to Williamsburg, VA than it currently takes to fly to the other side of the planet. This approach ignores the historical relevance of the government’s authority, if not outright duty, to respond to public health crises even if constitutional rights were implicated. The lack of historical laws related to mass shootings, large capacity magazines, and bullets designed to expand inside the body reflects the drastic evolution of gun violence rather than an impenetrable Second Amendment scope. Indeed, while state police powers to protect public health and safety preexist the Constitution, gun violence would have hardly been a priority for elected officials historically. Thus, the absence of robust, widespread gun regulations hardly reflects a consensus understanding of Second Amendment protections. Instead, examining accepted government restrictions for public health crises such as infectious diseases may provide better insight into the scope of authority to limit constitutional rights to protect the public. A public health law lens also helps to clarify that cementing policy options to emerging public health problems lacks historical pedigree.

Fordham Urban Law Journal, Vol. 51, No. 1, 2023, 20pg

By Matt Schroeder

Since 1970, armed groups have hit dozens of civilian aircraft with man-portable air defence systems (MANPADS), killing more than 1,000 civilians. The international community has taken numerous steps to reduce illicit proliferation, but armed groups in the Middle East and North Africa (MENA) region continue to acquire and use these systems.

Persistent Perils: Illicit MANPADS in the MENA Region—a new Report from the Small Arms Survey’s Security Assessment In North Africa (SANA) project—provides an in-depth analysis of the proliferation of MANPADS in North Africa and the Middle East from 2015–23. Drawing on imagery and data collected since 2015 to identify the type, model, generation, and country of design/manufacture of illicit MANPADS in the region, the Report assesses the implications of recent proliferation patterns for regional security and international norms and agreements.  

Geneva: Small Arms Survey. 2024, 68pg

By Gary Klein

In light of the difficulty achieving consensus about gun violence prevention at the federal level in the current political climate, leadership and innovation on gun violence prevention must come at the state and local levels. State legislators, law enforcement leaders, and state attorneys general must take the lead to find the pathway that most effectively protects their residents in collaboration with concerned communities. There is substantial evidence that states with comprehensive and effective gun laws have fewer incidents of gun homicides, gun suicides, and unintentional shooting deaths. These 50 proposals for state or local action have demonstrated success where they have been enacted and are a starting point for states interested in promoting public safety by addressing preventable gun violence.  

Washington, DC: Violence Policy Center, 2022. 24p.

By The Violence Policy Center

Large capacity ammunition magazines are the common thread running through most mass shootings in the United States. Since 1980, there have been at least 106 mass shootings (three or more fatalities not including the shooter) where the shooter used large capacity ammunition magazines containing more than 10 rounds. A total of 959 people were killed in these shootings, and 1,309 were wounded. This number is likely a significant undercount of actual incidents as there is no consistent collection or reporting on this data. Even in many high-profile shootings, information on magazine capacity is neither released nor reported. The Violence Policy Center has compiled this list of incidents by analyzing news reports and follow-up investigative reports on mass shootings. Only shootings in which there is specific information that large capacity magazines were used are included.  ( This document was last updated on January 11, 2024.

Washington, DC: Violence Policy Center, 2024. 17p. 

By F. Lee Francis

This article is the culmination of a yearlong research project, and it is the first to address addiction and drug use in the area of Second Amendment Law. I argue that addicts may be disarmed, if they are dangerous. My dangerousness test centers on illicit use and imminent danger. That is, do the facts and circumstances prove that an individual is in fact a danger. To put it another way, disarmament is appropriate when there exists demonstrable evidence that a person poses a significant and imminent risk of causing public injury. The article develops and expands upon some themes and arguments that were first sketched out in my articles, Armed and Under the Influence: The Second Amendment and the Intoxicant Rule After Bruen (Forthcoming in the Marquette Law Review (2024) and Defining Dangerousness: When Disarmament is Appropriate (Forthcoming Texas Tech Law Review 2024).

There is growing confusion within the lower courts regarding when an individual, particularly those who have a history of drug use or addiction, may have their Second Amendment rights restricted. This paper intends to clarify the appropriate standard. The goal of this article is to aid in determining when an individual should be permanently disarmed.

Part I surveys the history of addiction. This section examines the commonness of addiction around the time of the founding to the early twentieth century. Furthermore, Part I also reviews the relevant legislative action relating to firearm possession, use, and control and addiction. The essential claim of Part I contends that modern laws restricting the possession of a firearm due to addiction are unconstitutional. Following an examination of the relevant history and legislation, Part II considers the arguments in favor of prohibiting addicts from possessing firearms. Part III focuses on the modern and developing controversies surrounding criminalizing the possession of firearms because of an individual’s history of addiction. Part IV, then, examines when an addict may be disarmed.

Francis, F. Lee, The Addiction Restriction: Addiction and the Right to Bear Arms. 2024, 48pg

By: Vivian H. Lyons, Emma L. Gause, Keith R Spangler, et al.

Importance: Firearm violence is a leading public health crisis in the US. Understanding whether and how ambient temperature is associated with firearm violence may identify new avenues for prevention and intervention.

Objective: To estimate the overall and regional association between hotter temperatures and higher risk of firearm violence in the US.

Design, setting, and participants: This cross-sectional study used distributed lag nonlinear models, controlling for seasonality and long-term time trends by city and pooled results overall and by climate region. The most populous cities in the US with the highest number of assault-related firearm incidence (ie, shootings) from 2015 to 2020 were analyzed. Data analysis was performed from October 2021 to June 2022.

Exposures: Maximum daily temperature by city.

Main outcomes and measures: The primary outcome was the number of assault-related firearm shootings by city.

Results: A total of 116 511 shootings in 100 cities were included in this analysis. The pooled analysis estimated that 6.85% (95% CI, 6.09%-7.46%) of all shootings were attributable to days hotter than city-specific median temperatures. This equates to 7973 total shootings (95% CI, 7092-8688 total shootings) across the 100 cities over the 6-year study period, although the number of total persons injured or killed would be higher. Estimated risk of firearm incidents increased almost monotonically with higher temperatures, with a local peak at the 84th percentile of the temperature range corresponding to a relative risk of 1.17 (95% CI, 1.12-1.21) compared with the median temperature. However, even moderately hot temperatures were associated with higher risk of shootings. Although significant, there was low heterogeneity between cities (I2 = 11.7%; Cochran Q test, P = .02), indicating regional or climate-specific variation in the daily temperature and incident shootings relationship.

Conclusions and relevance: These findings underscore the importance of heat adaptation strategies broadly throughout the year to reduce shootings, rather than focusing on only the hottest days.

JAMA Netw Open. 2022 Dec 1;5(12):e2247207. doi: 10.1001/jamanetworkopen.2022.47207. PMID: 36525273; PMCID: PMC9856408.

By Dennis Mares

This document is part of the Response Guide series which is one of three series in the Problem-Oriented Guides for Police series. Response guides summarize knowledge about whether police should use certain responses to address various crime and disorder problems, and about what effects they might expect. This guide include examples and case studies as it covers the basic principles of gunfire detection and how it works; discusses the efficacy and police uses of acoustic gunshot detection systems, describing types of systems, experimental applications of the technology, and accuracy of acoustic gunshot detection systems; describes the analysis of acoustic gunshot detection system data; recommends best practices for responding to gunshots; and gives advice for implementing acoustic gunshot detection system, noting considerations such as coverage area, costs, personnel needs, interoperability with other systems, training requirements, and other factors that may impact decision-making.

PROBLEM-ORIENTED GUIDES FOR POLICE RESPONSE GUIDE SERIES NO. 14 Tempe, AZ: ASU Center for Problem-Oriented Policing, 2022. 29p

By Daniel S. Lawrence, Nancy G. La Vigne, Paige S. Thompson

This publication represents a technical summary report of the Urban Institute’s evaluation of the implementation, use, and impact of Gunshot Detection Technology (GDT) by law enforcement agencies in three cities: Denver, CO; Milwaukee, WI; and Richmond, CA. The goal of this study was to conduct a rigorous process and impact evaluation of GDT to inform policing researchers and practitioners about the impact GDT may have. To achieve this goal, we implemented a mixed-methods research design. Qualitative data collection included 46 interviews with criminal justice stakeholders to learn implementation processes and challenges associated with iDT, and 6 focus groups with 49 community members to learn how residents feel about policing efforts to reduce firearm violence and its use of GDT. Quantitative data collection included administrative data on calls for service (CFS), crime, and GDT alerts, as well as comprehensive case file reviews of 174 crimes involving a firearm. Quantitative analyses examined the impact of GDT by (1) comparing counts of gunshot notifications for GDT alerts to shooting-related CFS, (2) comparing response times of GDT alerts to shooting-related CFS, (3) examining the impact GDT has had on CFS and crimes, and (4) conducting a cost-benefit analysis of the GDT. Evaluation findings suggest that GDT is generally but not consistently associated with faster response times and more evidence collection, with impact on crime more uneven but generally cost-beneficial. We also conclude that agencies should implement GDT sensors strategically, train officers thoroughly, ensure that GDT data are used and integrated with other systems, and engage with community members early and often. More detailed information from this study will be available in forthcoming journal articles.

Washington, DC: Urban Institute 2019. 15p.

By Dennis Mares and the Center for Crime Science and Violence Prevention

ShotSpotter’s gunshot detection system was deployed in Winston-Salem in August 2021. Since then, nearly 2,000 alerts received a response by Winston-Salem Police.

Results indicate: 

• Improved response to gunfire

  • The response to alerts is significantly quicker than those called in by residents (- 5 min.).

  • ShotSpotter calls received significantly more investigative time, which likely indicates improved evidence recovery.

  • Fewer than one in four ShotSpotter alerts also received a call from residents.

• ShotSpotter produces the following actionable results:

  • Shell casings were recovered in 581 incidents (37.1%)

  • Firearms were recovered in 47 (3%) of alerts.

  • Sixty-seven (3.4%) gun-related arrests are connected to alerts. 

• Deployment of ShotSpotter is related to a reduction in violent gun crimes:

  • Aggravated assaults are down 26% comparing before-after results in the ShotSpotter area.

  • Comparable area and overall city numbers indicate an increase in aggravated assaults during the same period. Comparatively assaults are down 38% in the ShotSpotter community.

  • In real numbers, there are between 51-75 fewer assaults annually in the ShotSpotter area than would be expected. 

• Cost-Benefits:

  • Our estimate suggests that ShotSpotter may save the Winston Salem community between $5 and $8 Million annually.

  • Average annual implementation cost is estimated between $230,000-350,000

  • This indicates a $15-25 return for each dollar spent.

Edwardsville, IL: Southern Illinois University, Center for Crime Science and Violence Prevention, 2024. 27p.

By Eric L. Piza, Rachael A. Arietti, Jeremy G. Carter & George O. Mohler

Objectives

This study tests whether (1) shots fired calls for service in the gunshot detection technology (GDT) target area are more likely to be classified as unfounded; (2) police responses to shootings in the GDT target area are more likely to recover ballistic evidence or firearms; and (3) shootings in the GDT target area are more likely to be cleared.

Methods

Entropy balancing created a weighted control group that equaled the treatment group across a range of covariates. GDT effect was tested through logistic regression models with entropy balancing weights set as probability weights.

Results

Shots fired occurring in the GDT target area were 15% more likely to be classified as unfounded compared to control cases. GDT did not significantly influence the likelihood of evidence collection or case clearance in shooting incidents.

Conclusions

GDT may not add investigative value to police responses to shooting incidents and may increase patrol workload.

J Exp Criminol (2023). https://doi.org/10.1007/s11292-023-09594-6

By Eric L. Piza, David N. Hatten, Jeremy G. Carter, Jonas H. Baughman, George O. Mohler

Gunshot Detection Technology (GDT) is expected to impact gun violence by accelerating the discovery and response to gunfire. GDT should further collect more accurate spatial data, as gunfire is assigned to coordinates measured by acoustic sensors rather than addresses reported via 9-1-1 calls for service (CFS). The current study explores the level to which GDT achieves these benefits over its first five years of operation in Kansas City, Missouri. Data systems are triangulated to determine the time and location gunfire was reported by GDT and CFS. The temporal and spatial distances between GDT and CFS are then calculated. Findings indicate GDT generates time savings and increases spatial precision as compared to CFS. This may facilitate police responses to gunfire events and provide more spatially accurate data to inform policing strategies. Results of generalized linear and multinomial logistic regression models indicate that GDT benefits are influenced by a number of situational factors.

Policing: A Journal of Policy and Practice. https://doi.org/10.1093/police/paac097 , 2023 38p.

By Sonia L. Robinson, Christopher D. McCort, Colette Smirniotis, Garen J. Wintemute & Hannah S. Laqueur

Background

Firearm violence is a major cause of death and injury in the United States. Tracking the movement of firearms from legal purchase to use in crimes can help inform prevention of firearm injuries and deaths. The last state-wide studies analyzing crime gun recoveries used data from over 20 years ago; thus, an update is needed.

Methods

We used data for 5,247,348 handgun and 2,868,713 long gun transactions and law enforcement recoveries from California crime gun recovery (2010–2021) and California’s Dealer Records of Sales records. Covariates included characteristics of dealership sales, firearms and their transactions, and purchaser’s demographic characteristics, purchasing history, criminal history (from firearm purchaser criminal history records), and neighborhood socioeconomic status. Analyses for handguns and long guns was conducted separately. In multivariable analysis, we included correlates into a Cox proportional hazard model accounting for left truncation and clustering between the same firearm, purchaser, dealerships, and geographic location. Covariates that remained significant (P < 0.05) were retained. For handguns, we evaluated associations of violent and weapons crimes separately. In supplementary analyses, we examined interactions by purchasers’ race and ethnicity.

Results

In total, 38,441 handguns (0.80%) and 6,806 long guns (0.24%) were recovered in crimes. A firearm dealer’s sales volume, percent of transactions that were denials, pawns, pawn redemptions, and firearms that became crime guns were each positively associated with firearm recovery in crime. Handguns that were inexpensive, larger caliber, and that had been reported lost or stolen were positively associated with recovery in crimes. Purchaser characteristics associated with crime gun recovery included: being younger, female, Black, Hispanic, Native American or Pacific Islander, or other race/ethnicity (vs white), having previous arrests, living in close proximity to the firearm dealership, and living in a more socially vulnerable census tract. Associations with race and ethnicity were modified by previous infraction-only arrests.

Conclusions

This study confirms that many previously studied correlates of firearm recovery are still relevant today. We were able to expand on previous research by examining novel associations including purchasers’ criminal history and previous firearm transaction history. These results provide evidence that can be used to disrupt firearm use in crimes.

Injury Epidemiology volume 11, Article number: 8 (2024)

By Pilar Kelly,  Angie Weis Gammell, Lindsay Bass-Patel

  In July 2023, the Wilson Center conducted nine focus groups and two individual interviews, with a total of 30 participants who live in the ShotSpotter pilot area in Durham, North Carolina. Participants were asked to discuss their perceptions of safety, gun violence, policing in their neighborhoods, ShotSpotter technology, and changes in policing or violence since the ShotSpotter pilot began. Participants had not observed any impact on gun crime since ShotSpotter was implemented, nor did they believe ShotSpotter could help to reduce gun crime. No resident identified any negative change in police activity or tactics since ShotSpotter was implemented. The participants who reported seeing changes in policing since ShotSpotter described those changes in a positive light. For participants who expressed opposition to having ShotSpotter in their neighborhoods, their opposition was rooted primarily in a lack of trust rather than direct experiences. This mistrust was directed toward City Council, ShotSpotter as a corporation, policing as an institution, and concerns about technology storing sensitive data. The majority of participants who spoke about the cost of ShotSpotter expressed negative views and suggested that the money would be better spent on other initiatives. Additionally, some residents felt unheard in the decision-making process to pilot ShotSpotter, which contributed to negative feelings about both the technology and City Council. Still, participants expressed hopes that ShotSpotter may lead to faster response times and more direct communication between residents and police, both of which they believe may work to enhance community members trust in police officers. Regarding whether ShotSpotter should continue in their community, two participants expressed strong support for continuing the ShotSpotter program, eight participants expressed strong opposition, and ten participants expressed conditional responses or uncertainty. For example, some participants would support the program if there were data that demonstrated ShotSpotter was impactful and effective.   

Durham, NC: Wilson Center for Science and Justice, at Duke Law School, 2024. 32p.

By Philip J. Cook and Adam Soliman

The City of Durham contracted with SoundThinking for a 12-month pilot program with ShotSpotter, a gunfire detection system. The system was installed in a three square-mile area of Durham that was selected based on having a relatively high rate of gun violence. The pilot operated from December 15, 2022 through December 14, 2023. This evaluation offers information on both the costs and the relevant impacts of the ShotSpotter pilot installation, but it does not offer a suggestion on whether the City should use ShotSpotter in the future. It is intended to inform the decision-makers, but not to advise them. Notifications and Deployments The ShotSpotter (SS) installation operated as a supplement to the 911 system, whereby residents are encouraged to contact the Durham Police Department (DPD) if they hear or witness a shooting. During the pilot period, DPD received 1,447 notifications of gunfire in the target area in which ShotSpotter was installed: 57% of these were SS alerts with no 911 call, 28% were 911 calls with no SS alert, and 15% had both 911 and SS notifications. Thus SS more than doubled the number of gunshot notifications compared with what DPD would have received (from 911) in its absence. DPD implemented a response protocol for the entire city on December 15, 2022 that any gunshot notification would be treated as a Priority 2 incident, requiring the immediate deployment of two patrol cars to the scene without sirens and flashers. In the target area, the effect of the “extra” SS alerts was to add an average of 2.3 Priority 2 deployments daily to the target area, approximately a 2% increase citywide. The SS installation was designed to detect gunfire that occurred outdoors, with a few exceptions (such as if the firearm was equipped with a silencer). For the 52 known gunshot incidents during the pilot period in which victims were wounded or killed, SS alerts were published for 26 and 911 calls received for 50 of these 52. Eight of the incidents (accounting for 14 gunshot victims) that were missed by SS were due to system failure or human error. In addition to these false negatives, there were likely some false positives, but we have no way to estimate how frequent. SS alerts include information on the time and precise location of the incident, and the number of shots fired. They were transmitted directly to DPD’s CAD system in each patrol car, almost always within 60 seconds. For incidents in which there is both a SS alert and a 911 call, the SS alert typically was first, and often provided a more precise location. Our analysis finds that in 2023, the median response time (from alert to arrival at the scene) was 5.5 minutes, which reflected a decline by 1.2 minutes in the target area compared with the rest of the city. There was a still greater improvement in the 90th percentile of response times, which declined by 3.6 minutes. In sum, SS had the effect of more than doubling the number of gunshot notifications received by DPD for the target area, and notably improving response times by patrol officers. 

Durham, NC: Wilson Center for Science and Justice, at Duke Law School, 2024. 39p.   

By Sonia L. Robinson, Christopher D. McCort, Colette Smirniotis, Garen J. Wintemute & Hannah S. Laqueur 

Background

Firearm violence is a major cause of death and injury in the United States. Tracking the movement of firearms from legal purchase to use in crimes can help inform prevention of firearm injuries and deaths. The last state-wide studies analyzing crime gun recoveries used data from over 20 years ago; thus, an update is needed.

Methods

We used data for 5,247,348 handgun and 2,868,713 long gun transactions and law enforcement recoveries from California crime gun recovery (2010–2021) and California’s Dealer Records of Sales records. Covariates included characteristics of dealership sales, firearms and their transactions, and purchaser’s demographic characteristics, purchasing history, criminal history (from firearm purchaser criminal history records), and neighborhood socioeconomic status. Analyses for handguns and long guns was conducted separately. In multivariable analysis, we included correlates into a Cox proportional hazard model accounting for left truncation and clustering between the same firearm, purchaser, dealerships, and geographic location. Covariates that remained significant (P < 0.05) were retained. For handguns, we evaluated associations of violent and weapons crimes separately. In supplementary analyses, we examined interactions by purchasers’ race and ethnicity.

Results

In total, 38,441 handguns (0.80%) and 6,806 long guns (0.24%) were recovered in crimes. A firearm dealer’s sales volume, percent of transactions that were denials, pawns, pawn redemptions, and firearms that became crime guns were each positively associated with firearm recovery in crime. Handguns that were inexpensive, larger caliber, and that had been reported lost or stolen were positively associated with recovery in crimes. Purchaser characteristics associated with crime gun recovery included: being younger, female, Black, Hispanic, Native American or Pacific Islander, or other race/ethnicity (vs white), having previous arrests, living in close proximity to the firearm dealership, and living in a more socially vulnerable census tract. Associations with race and ethnicity were modified by previous infraction-only arrests.

Conclusions

This study confirms that many previously studied correlates of firearm recovery are still relevant today. We were able to expand on previous research by examining novel associations including purchasers’ criminal history and previous firearm transaction history. These results provide evidence that can be used to disrupt firearm use in crimes.

 Inj. Epidemiol. 11, 8 (2024). https://doi.org/10.1186/s40621-024-00491-8

By Michael Sierra-Arévaloa and Justin Nix 

After more than 50 years of social science research on policing in the United States, the danger of police work remains a salient feature of police officers’ occupational environment (Loftus, 2010; Marenin, 2016; Sierra-Arévalo, 2019). Scholarly attention to the danger of policing has been renewed by recent discussion of a “war on cops” that began after the 2014 police killing of Michael Brown in Ferguson, MO. Proponents of this hypothesized war posit that the contemporary political climate has resulted in widespread distrust and even disdain of police on the part of public officials, academics, and the news media; in turn, the public has become increasingly “anti-police” and emboldened to question, resist, and violently attack police officers on U.S. streets (Mac Donald, 2016). However, despite widespread concern among police administrators (Nix et al., 2018), empirical research on the most dire implication of a war on cops—violence against police—finds no significant increases in fatal or non-fatal violence against police in recent years (Maguire et al., 2017; Shjarback & Maguire, 2019). Nonetheless, the issue of violence against police remains highly salient to U.S. politics and policy, including the rise of the Blue Lives Matter movement and the growth in laws seeking enhanced penalties for killing police officers (Craven, 2017).  Despite the rich history of research on danger in police work, however, there are several long-standing limitations to this body of scholarship. First, researchers’ operationalization of “danger” tends toward the rarest, most extreme measure of danger in police work: felonious line of-duty deaths that are driven by firearm assaults (see White et al., 2019, p. 14). This focus on felonious deaths underestimates the total scope of the danger police confront by ignoring nonfatal violence against officers (c.f. Bierie, 2017; Bierie et al., 2016), including non-fatal firearm assaults that, even though they do not result in a line-of-duty death, represent cases of deadly force directed at police. Second, analyses that attend to all assaults on police officers better capture less-than-lethal violence (e.g. punches, kicks) but do not differentiate such cases from especially lethal threats like firearm assaults (Shjarback & Maguire, 2019; Tiesman et al., 2018; c.f. Bierie et al., 2016). Third, data sources that rely on voluntary reporting by police (e.g. LEOKA, NIBRS) are limited by a lack of consistent reporting by law enforcement agencies and marked lag times in the release of said data, frustrating timely, confident estimates of a pressing public safety and policy issue (Kuhns et al., 2016, p. 6; Nix et al., 2019, p. 6; Shjarback & Maguire, 2019). Because of its inattention to cases in which officers are shot but not killed, existing research tends to provide either an underestimate of gun violence directed at officers or eschew specificity in favor of an estimate of assault broadly defined. This, in combination with the data quality and timeliness issues that affect datasets commonly used to examine violence against police, prevents accurate estimates of total firearm assaults on officers that are of longstanding salience to the issue of officer safety in the United States (Cell, 2019; The President’s Commission on Law Enforcement and Administration of Justice, 1967, p. 239).  Given the decided gravity of the problem at hand, there is a clear and urgent need for researchers to bring new, more timely data to bear. This article addresses these issues with open-source data provided by the Gun Violence Archive (GVA), a non-profit organization that collects and constantly updates data on firearm assaults of police officers across the United States. Because GVA records both fatal and non-fatal firearm assaults on police, we are able to provide an estimate of firearm assaults on police officers that includes (and differentiates) fatal and non-fatal shootings.3 We use these data to provide national- and state-level estimates of fatal and non-fatal firearm assaults against police officers in the United States from 2014 to 2019. We conclude with consideration of future directions for this research as well as the promises and limitations of data like those collected by GVA in research on violence against and by police. We also provide concrete policy recommendations for improving the quality and timeliness of data on violence against police to better support police agencies, researchers, and policy makers.    

Criminology & Public Policy, Volume19, Issue3 Special Issue:CUTTING‐EDGE RESEARCH IN POLICE POLICY AND PRACTICE August 2020 Pages 1041-1066

By Jordan B. Cohen

In the 1980s, the production of guns made with polymer (industrial plastic) stoked concerns that firearms were becoming undetectable by metal detectors in places like airports and federal buildings. In response, Congress passed, and President Ronald W. Reagan signed into law, the Undetectable Firearms Act of 1988 (UFA; P.L. 100-649).

The UFA was codified as 18 U.S.C. §922(p) and prohibits owning, purchasing, importing, receiving, and selling firearms that do not include at least 3.7 ounces of stainless steel. The UFA also prohibits handguns where the barrel, slide or cylinder, or the frame or receiver do not generate an image that accurately depicts the shape of the component when under inspection by the type of x-ray machine commonly used at airports.

The UFA included a sunset clause, after which its provisions will be repealed. The UFA’s sunset has been delayed multiple times, most recently through March 22, 2024 (P.L. 118-40).

History of Undetectable Firearms Act

The impetus for the UFA stemmed from fears that polymer-framed firearms could slip past airport metal detectors. For example, the Glock was invented in the 1980s and is a polymer-framed, semi-automatic pistol. Initially designed for the Austrian military, the Glock’s frame weighs much less than traditional steel-framed firearms and the polymer allows it to better absorb recoil than other handguns.

Some observers framed the Glock as a hijacker’s special, referring to the potentiality that it could pass through airport security undetected. Additionally, in 1986 media reports claimed that the Glock, when dismantled, “is frighteningly easy to smuggle past airport security” and that “one Pentagon security expert decided to demonstrate just how easy it would be to sneak a Glock 17 aboard an airliner.” Though not mentioned in these articles, these same metal detectors and their operators were also often not recognizing pistols made exclusively out of metal.

Beyond concerns over polymer guns, some feared that individuals may attempt to board aircrafts or enter federal buildings with nondescript, gadget firearms or firearms that, when broken into component parts, do not look like traditional firearms—such as “a James Bond-like pen gun.”

Washington, DC: Congressional Research Service, 2024. 3p.

By Melissa W. Burek,  & Julia C. Bell

On June 13, 2022, Ohio enacted a permitless carry law (PCL), allowing Ohioans to carry a firearm without a concealed-carry license. The Center for Justice Research was tasked to explore the relationship between permitless carry and crime involving a firearm before and after the enactment of the PCL in the eight largest cities of Ohio. This exploratory study considers crime incidents involving a firearm, validated gunshot detection incidents, and the impact of PCL on law enforcement from June 2021 to June 2023. Major findings, study limitations, and future research recommendations are presented in the full report. In brief, we observed: • Results from a trend analysis indicated a significant decrease in crime incidents involving a firearm for Akron, Columbus, and Toledo, and across all 8 cities combined from June 2021- June 2023. • As displayed in the figure above, most cities’ crime rates decreased after the PCL was enacted. Unlike the other six cities, rates in Dayton and Cincinnati increased slightly, however. • Toledo, Parma, and Akron each experienced an average of 19% decrease in summed rates of crimes involving a firearm post-PCL. • Based on data from June 2021-June 2023, the enactment of the PCL does not appear to have any appreciable effect on law enforcement injuries or deaths by firearm in the cities of interest. • Data on gunshot detection technology for Toledo and Columbus also captured a decrease in validated crime incidents post-PCL by 23.2% and 20.6%, respectively. • Increases in crime rates in the spring-summer months appear both before and after the PCL went into effect for most cities (see Figure 1 in full report), but this observation could be due to the influence of other factors such as time of year or structural population characteristics. This slight acceleration in crimes involving firearms was also temporary

United States, Center for Justice Research. 2023, 22pg

By Tae-Young Pak

Surges in firearm sales after mass shootings have been well documented in the United States. This study presents three main findings regarding the impact of mass shootings on firearm demand and the moderating roles played by political and regulatory climates. First, mass shootings led to an immediate but temporary increase in gun sales. This effect continued for approximately 3–6 months after the incidents and was larger for shootings with a greater number of fatalities. Second, the association between mass shootings and gun sales was significant only under Democratic presidents. The party affiliation of the state legislature and state-level gun control did not moderate this association. Third, the increased firearm sales after mass shootings did not result in a higher level of firearm ownership. It appeared most purchases were made by current gun owners stockpiling additional firearms, thus indicating the fear of stricter gun control as a likely motivation. This study offers the following policy implications: (a) the public debates concerning gun violence could have the unintended consequence of raising gun demand among current owners, (b) the message of tightening gun control could increase the total stock of firearms in circulation, and (c) the regulations to prevent future mass shootings may be better addressed by the state government as a state-level regulation does not trigger demand response among potential consumers. 

Germany, Munich Personal RePEc Archive. 2022, 33pg