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 International Crisis Group

What’s new? Jama’tu Ahlis Sunna Lidda’awati wal-Jihad (JAS) has gained ground in the intra-jihadist fighting in north-eastern Nigeria, halting the previous momentum of the Islamic State West Africa Province (ISWAP). In the course of 2023, JAS took most of the islands in Lake Chad, which ISWAP had controlled. 

Why did it happen? Conflict between these Boko Haram splinters stems from differences in governance and treatment of civilians. JAS kills and steals from everyone; the more bureaucratic ISWAP generally spares Muslim non-combatants. Many JAS members surrendered to authorities or continued fighting instead of joining ISWAP after the death of JAS’s

leader in 2021. 

  Why does it matter? In the last two years, JAS and ISWAP may have visited more damage upon each other than the Lake Chad states have inflicted on the jihadists. Still, the splinters pose a significant threat. ISWAP is regrouping, while the revamped JAS is set to target civilians around the lake. What should be done? The Lake Chad governments will need to do more to prevail over the jihadists. They should mitigate risks to civilians by maintaining humanitarian assistance; expanding efforts to support defectors; improving airstrike precision; and reinvigorating regional security cooperation.    

Edited by Jeff Breinholt

Initially enacted in 1992, the Antiterrorism Act (ATA), 18 U.S.C. §2333, provides a legal remedy for American victims killed or injured by reason of international terrorism by creating a private cause of action, with treble damages and attorneys’ fees. Since then, some 150 lawsuits have been brought under the statute against such terrorist organizations as Hamas, Hizballah, and FARC, as well as the banks and companies alleged to have assisted them. These lawsuits have generated some 600 opinions.

Washington, DC: George Washington University Program on Extremism. 2024, 91pg

Edited By James Cuno and Thomas G. Weiss

Intentional destruction of cultural heritage has a long history. Contemporary examples include the Bamiyan Buddhas in Afghanistan, mosques in Xinjiang, China, mausoleums in Timbuktu, Mali, and Greco-Roman remains in Syria. Cultural heritage destruction invariably accompanies assaults on civilians, making heritage attacks impossible to disentangle from the mass atrocities of genocide, war crimes, crimes against humanity, and ethnic cleansing. Both seek to eliminate people and the heritage with which they identify. Cultural Heritage and Mass Atrocities assembles thirty-eight experts from the heritage, social science, humanitarian, legal, and military communities. Focusing on immovable cultural heritage vulnerable to attack, the volume’s guiding framework is the Responsibility to Protect (R2P), a United Nations resolution adopted unanimously in 2005 to permit international intervention against crimes of war or genocide. Based on the three pillars of prevent, react, and rebuild, R2P offers today’s policymakers a set of existing laws and international norms that can and—as this book argues—must be extended to the protection of cultural heritage. Essays consider the global value of cultural heritage and document recent attacks on people and sites in China, Guatemala, Iraq, Mali, Sri Lanka and Afghanistan, Syria, and Yemen. Comprehensive sections on vulnerable populations as well as the role of international law and the military offer readers critical insights and point toward research, policy, and action agendas to protect both people and cultural heritage. The table of contents along with a concise abstract of each chapter is offered online in Arabic, Chinese, French, Russian, and Spanish to facilitate robust, global dissemination of the strategies and tactics offered in this pathbreaking call to action.

Los Angeles: J. Paul Getty Trust, 2022. 649p.

By Elie Cavigneaux

Defeating terrorism and saving art: fighting the same battle

In a world where chaos and political instability plague many countries in the Middle East and North Africa, a lesser-known crime has emerged: the trafficking of cultural goods. This phenomenon, often overshadowed by more prominent issues, poses a significant global threat. But why is the trafficking of art and antiquities so concerning?

1. Financing Terrorism: Cultural goods trafficking is not merely a trade—it’s a critical source of funding for terrorism. Security Council resolutions, UNESCO, the European Union, and financial investigation units have all documented this link. The self-proclaimed “Islamic State” even institutionalized this trade, issuing excavation permits and organizing the sale of stolen pieces to market countries.

2. Hidden Threats: Although these looted artifacts may not flood the markets immediately, history shows that they can resurface years later. Works looted by the Nazis during World War II, for instance, have reappeared after decades of concealment.

3. Beyond Terrorism: Yet, the interest in this analysis extends beyond terrorism financing. The resale of “blood antiquities” reveals another dimension: money laundering, fraud, and tax evasion. This criminal activity affects not only the antiques market but also the broader art market.

4. Investing for Tomorrow: To combat this multifaceted threat, we must invest in detecting and preventing crimes related to cultural and art objects. Whether in times of war or peace, our ability to safeguard culture and heritage depends on proactive measures.

Working Paper. Paris: Groupe d’études géopolitiques, 2021. 13p

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)

Edited by Petra Terhoeven

How does terrorism affect our picture of the history of terrorism then, if the victims are moved centre stage? If the focus is put on their suffering? The contributions to this edition of the European History Yearbook will examine such questions in a broad range of historical case studies and methods, including visual history.

Berlin/Boston: De Gruyter, 2018. 172p.

By Bashir Bello and Mustapaha Muhammad Abdullahi

The study examined farmers–herdsmen conflict, cattle rustling, and banditry in Anka and Maradun local government area of Zamfara State, Nigeria. The study examined the influence of farmers–herdsmen conflicts on cattle rustling and banditry, and vice versa. Exploratory research was employed; focus group discussion (FGD) and key informant interview (KII)were used to collect primary data from the respondents. The data generated were transcribed and recorded verbatim (word-for-word account of verbal interview) and they were converted into written form. Data were enumerated and thematic analysis and categorization were provided. Secondary data were sourced from internet and relevant books. This study adopted the environmental resources scarcity and frustration-aggression theory. The findings of the study revealed that farmers–herdsmen conflict precipitates the acts of cattle rustling and banditry. It also revealed that conversely cattle rustling and banditry contributed to the farmers–herdsmen conflict in the local government area of Zamfara State. The study discovered that the synthesis of farmers–herdsmen conflicts, cattle rustling, and banditry pose serious threat to the safety and security of the people. The researchers recommended that there should be an introduction of grazing reserves equipped with adequate social amenities and that there should be policies capable of enhancing herders’ transformation from traditional to the modern method of animal husbandry. They also suggested that various factors responsible for farmers–herdsmen conflict, cattle rustling, and banditry should be properly managed by traditional and religious leaders. The findings corroborate the gaps which the researchers intended to fill

Sage Open, 11(4). 2021.

By Nsirimovu Okwuwada

There have been several agitations in Nigeria, but none have degenerated into the current barbaric, horrendous, heinous, and despicable dimensions of carnage, massacres, and bloodletting orchestrated by terrorists, bandits, kidnappers, and other organized violent crime syndicates. This study takes a holistic approach using secondary data sources to examine the root causes of the modern-day prevalence of kidnapping, banditry, terrorist attacks, and other organized criminal activities in Nigeria. The study finds that unemployment, excess supply of young people, neglect of certain regions in the distribution of national wealth, lack of government visibility, lack of equal economic opportunity for all, uncontrolled influx of firearms, poverty, and religious fanaticism contributes to the increasing rate of violent crime in Nigeria. The article finds that the nature of banditry, kidnapping, and terrorist attacks are similar, and the modes of attacks on civilian and government installations are also related. The government should thus become proactively visible throughout the nation via its security agencies and economic development agenda. Additionally, the government should educate local officials and traditional councils on contemporary methods for reporting and addressing violent groups in their communities.

MPRA Paper No. 117671, Munich: MPRA, 2023. 46p.

By Cyril O. Ugwuoke, Benjamin Okorie Ajah, Linus Akor, Sunday Ojonugwa Ameh, Cletus A. Lanshima, Elias C. Ngwu, Ugomma Ann Eze, and Michael Nwokedi

This paper examined the vulnerability of travelers to kidnapping, abduction and armed robbery attacks and in some extreme cases, death along Nigeria's highways. Insecurity on the nation's highways became a contemporary criminological discourse following the emergence of new strands of criminality like militancy, terrorism, kidnapping, herdsmen-farmers violence, communal conflicts and banditry. Nigerian highways have become the major operational hotspots for criminals who harass, terrorize, and traumatize travelers at will. With the ever-rising insecurity on Nigerian highways, the military and paramilitary offensives deployed by the Federal Government have not yielded the desired results culminating in the description of government's inertia as a form of state slumber. Data for this study were sourced from a content analysis of reported violent highway crimes by credible mainstream Nigerian newspapers, spanning a period of one year, from July 2020 to July 2021. Adopting the Social Disorganization Theory, the study indicated that the worrisome nature of insecurity on Nigeria's highways resulting in the high rate of abduction and murder of people of diverse military, professional, socioeconomic and political backgrounds has engendered a sense of helplessness, trauma and vulnerability among Nigerian road travelers. The paper recommends the de-centralization of Nigeria Police Force structure to create State Police that will encourage and electrify effective and better people oriented patrolling and management of insecurities on the Nigerian highways.

Heliyon v.9(10); 2023 Oct PMC10551549

By: John Sunday Ojo

This article explores the dominant narrative of ill-governed or ungoverned territories in the northern region of Nigeria where informality and socioeconomic deficit fashioned the mannerism of everyday life. Reconnoitering ungoverned territories, positing that radical jihadist and non-jihadist movements and criminal-armed groups are ideologically driven by localism and informal networks, particularly in the areas unkempt by the state. The paper interrogates to what extent ungoverned spaces embolden the recruitment of criminal and terrorist groups in northern Nigeria. It explains the complex security paradoxes confronting the Nigerian state, it analyses the Boko Haram insurgency, Fulani militancy and banditry within the context of ungoverned spaces that continuously breed terrorist organizations, and criminal networks, that pose an enormous risk to human security. It adopts a qualitative approach and spatial network analysis using Geographical Information System (GIS). The paper argues that the primordial negligence of ungoverned areas with limited state surveillance or unharmonized state presence, controlled by informal networks and hybrid arrangements creates an enabling environment for warlordism, religious fanaticism and tribal self-defense forces. It further demonstrates that governance failure in these regions stimulates illegal movement of arms and ammunition, the raw material for bombs, illegal drugs and foreign machines, and becomes abodes for Boko Haram jihadist and non-Boko Haram armed groups. The paper concludes that ungoverned spaces could be morphed into a production site for Weapons of Mass Destruction (WMD) by the terrorists in the near future, thus, until the Nigerian state pays attention to the territories under-governed or poorly governed, it will become difficult to win the war against terrorism, Fulani militancy and banditry through military response. Therefore, good governance that transcends ethnic chauvinism remains a veritable weapon in conquering multilayered security quagmires facing the giant of Africa.

African Security, Volume 13, 2020 - Issue 1

By Folahanmi Aina, John Sunday Ojo & Samuel Oyewole

Insecurity has worsened in Northwest Nigeria, due to the threat of armed banditry, necessitating the deployments and operations of the military. While there is increasing academic attention on the origins, causes, and nature of this threat, the conduct, achievements, prospects, and challenges of the military’s counter-banditism response in the region remains understudied. Accordingly, foregrounded by the need to close this gap, this qualitative study contributes to the literature through organised empirical research by examining the conduct, achievements, prospects, and challenges of the military's Joint Task Force operation Hadarin Daji – its major internal security operation – against armed banditry in Northwest Nigeria. Data is obtained from secondary sources which include academic journal articles, books, official reports, press briefs by the military, reputable local and international news reportage. The study’s central argument holds that the nature and character of the military’s campaigns against armed banditry – a form of unconventional warfare, poses significant challenges to it as a conventional fighting force, consequentially contributing towards the conflict’s protractedness. Recalibrating the military’s readiness for and response to unconventional warfare remains critical to degrading and defeating armed banditry in Northwest Nigeria.

African Secuirty Review Volume 32, 2023 - Issue 4

Edited by Tanya Mehra, Thomas Renard and Merlina Herbach with contributions from Marc Hecker and Sofia Koller.

The involvement of women in terrorism is not new, but it has gained more attention with the rise of the Islamic State in Iraq and Syria (ISIS), which attracted many women to its so-called caliphate. Initially perceived as victims or harmless, these women progressively became a growing subject of attention and concern for security services. In 2017, the Dutch intelligence service (AIVD) already indicated that the threat emanating from female jihadis should not be underestimated, while recognising knowledge gaps about the role(s) these women played in jihadi movements or the threat they posed.1 The same year, the United Nations Security Council Resolution 2396 (2017) stressed that women who were affiliated with terrorist organisations “may have served in many different roles, including as supporters, facilitators, or perpetrators of terrorist acts” and urged states to pay special attention to this as women “require special focus when developing tailored prosecution, rehabilitation and reintegration strategies.”2 Yet, in spite of more attention from counter-terrorism services, and a growing body of literature on female terrorists, there is still a considerable lack of data-driven, empirical research on female violent extremist offenders (VEOs). This book seeks to inform practitioners and policy-makers on how to manage female VEOs through the criminal justice system in a rule of law and human rights compliant manner through four case studies in Europe.

The Hague: The International Centre for Counter-Terrorism (ICCT: 2024. 223p.

By Anti-Defamation League

Every year, individuals with ties to different extreme causes and movements kill people in the United States; the ADL Center on Extremism (COE) tracks these murders. Extremists regularly commit murders in the service of their ideology, to further a group or gang they may belong to, or even while engaging in traditional, non-ideological criminal activities. In 2023, domestic extremists killed at least 17 people in the U.S., in seven separate incidents. This represents a sharp decrease from the 27 extremist-related murders ADL has documented for 2022—which itself was a decrease from the 35 identified in 2021. It continues a trend of fewer extremist-related killings after a five-year span of 47-79 extremist-related murders per year (2015- 2019). One reason for the trend is the decrease in recent years of extremist-related killings by domestic Islamist extremists and left-wing extremists. The 2023 murder totals include two extremist-related shootings sprees, both by white supremacists, which together accounted for 11 of the 17 deaths. A third shooting spree, also by an apparent white supremacist, wounded several people but luckily did not result in fatalities. All the extremist-related murders in 2023 were committed by right-wing extremists of various kinds, with 15 of the 17 killings involving perpetrators or accomplices with white supremacist connections. This is the second year in a row that right-wing extremists have been connected to all identified extremist-related killings. Two of the incidents from 2023 involved women playing some role in the killing or its aftermath. This report includes a special section that examines the role played by women in deadly extremist violence in the United States by analyzing 50 incidents from the past 20 years in which women were involved in some fashion in extremist-related killings. Murder & Extremism in the United States in 2023

New York: Anti-Defamation League, 2024. 36p.

Elizabeth Pearson, Joe Whittaker, Till Baaken, Sara Zeiger, Farangiz Atamuradova, and Maura Conway

“This report presents findings from the REASSURE (Researcher, Security, Safety, and Resilience) project’s in-depth interviews with 39 online extremism and terrorism researchers. Based at universities, research institutes, and think tanks in Europe and North America, the interviewees studied mainly, albeit not exclusively, far-right and violent jihadist online activity. The report catalogues for the first time the range of harms they have experienced, the lack of formalised systems of care or training, and their reliance therefore on informal support networks to mitigate those harms.”

Vox Pol. REASSURE. 2023. 138p

By Justin Nix and John A. Shjarback

Objectives

To quantify nonfatal injurious police shootings of people and examine the factors associated with victim mortality.

Methods

We gathered victim-level data on fatal and nonfatal injurious police shootings from four states that have such information publicly available: Florida (2009–14), Colorado (2010–19), Texas (2015–19), and California (2016–19). For each state, we examined bivariate associations between mortality and race/ethnicity, gender, age, weapon, and access to trauma care. We also estimated logistic regression models predicting victim mortality in each state.

Results

Forty-five percent of these police shooting victims (N = 1,322) did not die. Black–white disparities were more pronounced in nonfatal injurious police shootings than in fatal police shootings. Overall, Black victims were less likely than white victims to die from their wound(s). Younger victims were less likely to die from their wound(s), as well as those who were unarmed.

Conclusions

Racial and age disparities in police shootings are likely more pronounced than previous estimates suggest.

Policy implications

Other states should strongly consider compiling data like that which is currently being gathered in California. Absent data on nonfatal injurious police shootings–which account for a large share of deadly force incidents–researchers and analysts must be cautious about comparing and/or ranking jurisdictions in terms of their police-involved fatality rates.

PLOS One,  November 10, 2021