By Police Executive Research Forum

Jurisdictions across the United States have struggled with a dramatic rise in carjackings since 2020, leaving police leaders with questions about why this spike is occurring, why juveniles are committing this crime in unprecedented numbers, and why carjacking numbers remained elevated when the number of homicides and aggravated assaults started to decline. With those questions in mind, the Police Executive Research Forum (PERF) assembled a group of over 130 people from more than 50 different agencies for a National Summit on Carjacking in early 2024 in Washington, D.C. Throughout the day, police leaders, federal officials, local and federal prosecutors, researchers, executives, and business and community leaders discussed the situation in 7. D.C. Metropolitan Police Department. MPD Carjacking Dashboard. https://mpdc.dc.gov/page/carjacking. their communities and the challenges they have faced effectively addressing these incidents, particularly when juveniles are involved. Jurisdictions that have successfully brought their numbers down shared lessons learned and promising strategies for preventing carjackings. This report is drawn from the comments and observations of those who attended PERF’s summit and follow-up interviews. It looks at the carjacking problem in cities and counties across the country, offers insights into the factors causing the increase, and shares some of the innovative approaches jurisdictions are implementing — including the use of technology, data analysis, and cross-agency partnerships. The report includes 10 recommendations to help police and other stakeholders effectively respond to carjackings in their communities.

Washington, DC: Police Executive Research Forum, 2024. 62p.

By Randi Hjalmarsson, Stephen Machin, Paolo Pinotti

The economics of crime has emerged as a critical field over the past 30 years, with economists increasingly exploring the causes and consequences of criminal behavior. This paper surveys key contributions and developments from labor economists, who investigate the (often two-way) intersection of crime with labor market factors, such as education, wages, and unemployment. The paper underscores the importance of understanding criminal decision-making in economic analysis through the lens of opportunity costs and labor market conditions. Methodological advancements, particularly those addressing causation, have propelled the field forward, enabling more accurate conclusions to be drawn for policy recommendations. The paper also explores the role of social policies and international contexts, emphasizing the need for evidence-based reforms to effectively reduce crime. This comprehensive review underscores the transformative impact of economics on crime research and its potential to influence real-world policies.

IZA DP No. 17423 Bonn: IZA – Institute of Labor Economics , 2024. 66p.

By Paul Pazen, Thomas Young, DJ Summers and Cooper Pollard

Colorado’s crime rate is not back to its pre-pandemic level. Both local and state authorities are currently attempting to find policy solutions.

Some localities have created policies and procedures that go beyond state guidelines in an effort to control crime. The City of Aurora implemented mandatory minimum sentencing guidelines for auto theft in 2022, for example, the year that Colorado’s and Aurora’s auto theft rates were highest. This policy led to a decrease in the auto theft rate in the city beyond what was seen statewide. In 2023, state lawmakers tried to address auto theft with passage of SB23-097. This bill did not implement mandatory minimum sentences, but instead made it a felony to commit auto theft regardless of the value of the vehicle. The law went into effect on July 1, 2023.

Using Aurora’s experience as a guide, CSI attempted to assess what the economic savings would be if the state were to experience the same decrease in auto theft, shoplifting, and overall crime that Aurora did after implementing its ordinance.

Key Findings

The share of auto theft in Aurora was 19% in July 2022. Since the passage of Aurora’s ordinance, known as “Mandatory Minimum Sentences for Motor Vehicle Theft,” the share averaged 16% from August 2022 through December 2024, representing a three percentage point decrease from the pre-August 2022 period.

A market model predicting auto theft in Aurora suggests there were 723 fewer auto thefts in Aurora from August 2022 to December 2024, a 6% decline relative to other large cities in the state.

For automobile crime, a 6% decline equates to $16.3 million in economic savings for Aurora from August 2022 through December 2024. For the largest city in the state, Denver, the economic savings would be $37.3 million over the same 29 months.

In contrast to Aurora’s experience, initial model results on the state impact from its 2023 effort was less pronounced at a 3% reduction in auto theft.

If Aurora’s experience is indicative of the potential savings of a similar statewide approach to crime, a 6% decline in crime statewide for all reported criminal offenses would have equated to $1.8 billion in economic savings in 2024, or roughly $774 per Colorado household.

Changes in local crime are not uniform across the state, however. The change in crime over the past five years varies widely by city and county.

Greenwood Village, CO : Common Sense Institute, 2025, 18p

By Christopher Louras

A series of interviews with criminal justice stakeholders conducted by Crime Research Group (CRG) in 2020 concluded that policymakers at both the state and local levels rely on access to accurate data to fully understand the scope of criminal incidents that occur within Vermont generally and within communities specifically. Without timely and accurate information, those policymakers recognize the inherent challenge in developing both short- and long-term effective strategies to address the needs of the constituencies they serve. To that end, this report analyzes five years of National Incident Based Reporting System (NIBRS) data for incident trends related to law enforcement agencies’ recording day(s) of the week and time of day for criminal events. While this study by no means provides a comprehensive summary of how law enforcement agencies spend their time in response to calls for service, it provides a glimpse into one critical component, when crimes occur and/or are recorded within Vermont’s data systems, that is needed to effectively and efficiently serve the public. 

Montpelier, VT: Crime Research Group, 2021. 11p.

By Ernesto Lopez, Bobby Boxerman

Key Takeaways This study updates and supplements previous U.S. crime trends reports by the Council on Criminal Justice (CCJ) with data through December 2024. It examines yearly and monthly rates of reported crime for 13 violent, property, and drug offenses in 40 American cities that have consistently reported monthly data over the past six years. The 40 cities are not necessarily representative of all jurisdictions in the United States. Not all cities published data for each offense (see the Appendix for which cities reported which offenses); trends in offenses with fewer reporting cities should be viewed with caution. Not all crimes are reported to law enforcement. In addition, the data collected for this report are subject to revision by local jurisdictions. Reported levels of 12 of the 13 offenses covered in this report were lower in 2024 than in 2023; shoplifting was the only offense higher in 2024 compared to 2023. Looking at changes in violent offenses from 2023 to 2024, the number of homicides in the 29 study cities providing data for that crime was 16% lower, representing 631 fewer homicides. There were 4% fewer reported aggravated assaults, 15% fewer gun assaults, 6% fewer sexual assaults, and 4% fewer domestic violence incidents last year than in 2023. Robbery fell by 10% while carjackings (a type of robbery) decreased by 32%. Motor vehicle theft had been on the rise from the summer of 2020 through 2023, but that trend reversed last year; there were 24% fewer motor vehicle thefts in 2024 than in 2023. Reports of residential burglaries (-13%), nonresidential burglaries (-6%), larcenies (-5%), and drug offenses (-3%) all decreased in 2024 compared to 2023. But rates of reported shoplifting, a crime that has received extensive attention from the media and policymakers, increased by 14% over the same period. Examining trends over a longer timeframe, most violent crimes are at or below levels seen in 2019, the year prior to the onset of the COVID pandemic and racial justice protests of 2020. There were 6% fewer homicides in the study cities in 2024 than in 2019. Similarly, sexual assault (-26%), domestic violence (-11%), and robbery (-19%) were lower in 2024 than in 2019. In contrast, aggravated assaults (+4%), gun assaults (+5%), and carjackings (+25%) were higher in 2024 than in 2019. Homicide rates in some high-homicide cities, including Baltimore, Detroit, and St. Louis, have dropped even further, returning to the levels of 2014, when national homicide rates were at historic lows. Rates in other cities have largely returned to pre-pandemic levels. Property crime trends have been mixed over the last five years. There were fewer residential burglaries (-38%) and larcenies (-12%) in 2024 than in 2019, but more nonresidential burglaries (+12%) and shoplifting (+1%). Motor vehicle thefts were higher by half (+53%) during the timeframe. Drug offenses in 2024 were 28% below 2019 levels. While these crime reductions are promising, the United States still experiences high levels of homicide compared to other industrialized nations, and progress should not slow local, state, federal, and community efforts to adopt comprehensive, evidencebased strategies to reduce violence. Furthermore, researchers should redouble their efforts to identify how broad behavioral shifts and other societal dynamics may affect trends.

Washington, DC: Council on Criminal Justice, 2025. 39p.

 By David Yerger, Brandon Vick, Robert Orth, and Charles Gartside, 

The project’s primary goal was to investigate whether shocks stemming from the COVID-19 pandemic either triggered or heightened human suffering in two crimerelated areas: murder and abuse. A secondary goal was to identify rural-urban differences in these outcomes both before and during the pandemic. An analysis of homicides and protection from abuse orders over time provided valuable insights regarding crime trends and rural-urban differences, but it did not suggest large, long-term effects due to the COVID-19 pandemic throughout the state. The statewide homicide rate rose 21 percent from 2019 to 2020, but the increase was specific to a certain group and location: Black, male victims in Philadelphia County, murdered with a firearm, with most of these incidents being homicides, with no known relationship between the victim and offender (Philadelphia County’s murder rate increased 36 percent in 2020). In rural counties, the 2020 murder rate rose 24 percent, and in non-Philadelphia urban counties, there was a 3 percent increase. It should be noted that these upward trends came after homicides steadily rose from 2014 to 2018, before falling significantly in 2019, and then rising in 2020. The exploratory analysis on county-levels of COVID case and death rates found no statistical evidence that high COVID-rate counties were more likely to experience high levels of protection from abuse orders or homicides. However, the analysis found that counties with higher unemployment rates and Supplemental Nutrition Assistance Program (SNAP) participation also experienced higher murder rates and protection from abuse order prevalence in 2020 (a relationship that holds when tested across other years). 

Harrisburg, PA: Center for Rural Pennsylvania, 2022.  42p.

By Ernesto Lopez, Robert Boxerman and Keley CundiffEErnes

Since shortly after the onset of the COVID-19 pandemic, the Council on Criminal Justice has tracked changing rates of violent and property crime in large cities across the United States. The pandemic, as well as the social justice protests during the summer of 2020 and other factors, have altered the motives, means, and opportunities to commit crimes.

Prepared for the Council on Criminal Justice’s Crime Trends Working Group, this report focuses on trends in shoplifting, a subset of retail theft which, in turn, is a subset of overall larceny-theft. The FBI defines larceny-theft as the unlawful taking of property without force, violence, or fraud.

The report looks at shoplifting patterns from before the onset of the COVID-19 pandemic through mid-year 2023. To date, attempts to measure changes in retail theft, including organized retail theft, have relied on retail industry data5 or have been limited to one state.

The city-specific data included in this report are drawn from open-data sources from 24 cities that, over the past five years, have consistently reported specific shoplifting data. Additional data come from the U.S. Justice Department’s National Incident-Based Reporting Program (NIBRS).7 The NIBRS data include a sample of 3,812 local law enforcement agencies. The analyses examine the changing frequency of reported shoplifting, trends in other property offenses, changes in the value of stolen goods, offenses that co-occur with shoplifting, and the number of people involved in each incident.

This report does not discuss in detail shoplifting data from the National Retail Federation’s Retail Security Survey.8 The 2021 survey (data ending in 2020) was the last year the survey reported figures on the number of incidents and the value of stolen goods. Because of this change, data from the survey could not be included.

Due to a lack of available data, this report does not examine factors that could be influencing the trends. Potential factors include changes in retailers’ anti-theft measures and changes in how retailers report shoplifting to law enforcement, which could be based on their perceptions of the extent to which local police or prosecutors will apprehend suspects and pursue criminal charges. Because these data rely on reported incidents, they almost certainly undercount total shoplifting. The findings presented here should be viewed with these considerations in mind.

Washington, DC: Council on Criminal Justice, 2023. 8p.

MAY CONTAIN MARKUP

Edited by Ted Robert Gurr

VIOLENCE IN AMERICA Vol. 1 explores the intricate tapestry of crime throughout the nation's history, shedding light on the various facets of violence that have shaped American society. From notorious outlaws of the Wild West to the rise of organized crime during Prohibition, this volume delves into the darker chapters of the past, offering a compelling narrative that examines the root causes and consequences of criminal activities. Through meticulous research and insightful analysis, this book provides a comprehensive overview of the history of crime in America, inviting readers to reflect on the enduring legacy of violence in a nation built on conflicting ideals.

Newbury Park. Sage. 1989. 281p.

By Alana Cook

As with many property crimes, incidents of retail theft fell significantly during the COVID-19 pandemic. Since October 2021, however, retail theft offences have been steadily increasing, up 47.5% year-on-year to June 2023. This paper considers the increase in retail theft up to June 2023 focusing on the regions where retail theft is increasing, what items is being stolen and from where, and who appears to be responsible. Findings show: • The sharp increase in retail theft following the removal of pandemic related restrictions has brought retail theft volumes back to equivalence with pre-pandemic figures in both Greater Sydney and Regional NSW. The absence of an increase in theft reports beyond what was reported prior to the pandemic suggests the upward trend reflects a return to pre-pandemic offending levels. The trend does not support emerging external factors, such as the cost-of-living crisis, driving an increase in this offence. • The most frequently reported stolen item in retail theft is liquor, including bourbon, whiskey, and vodka (stolen in 37% of incidents), followed by clothing (22%). Retail theft of personal items, such as perfume and cosmetics, has declined in the past five years (stolen in 13% of incidents). • Locations recording the biggest increase in steal from retail incidents over the past five years are licenced premises and general wholesalers. Department or clothing stores and chemists have reported the largest decreases. • $440 was the average value of items stolen in retail theft incidents in 2022/23. • Almost half of all retail theft offenders are aged 30 to 39 years but after accounting for population, young people aged 14 to 17 years had the highest rate of involvement with NSW Police.

(Bureau Brief No. 168). 

Sydney: NSW Bureau of Crime Statistics and Research 2023. 10p.

By Mélanie S.S. Seabrook, Alex Luscombe, Nicole Balian, Aisha Lofters, Flora I. Matheson, Braden G. O’neill, Akwasi Owusu-Bempah, Navindra Persaud, Andrew D. Pinto

This longitudinal study found no consistent correlations between increased police spending and municipal crime rates.

The analysis found that police services are a top budget priority in most municipalities, with up to 26 percent of total expenditures allocated to police. However, the findings revealed net increases in per capita spending are not associated with larger reductions in crime rates.

The authors examined budgets of 20 urban municipalities in Canada: Toronto, Montreal, Peel Region, Calgary, York Region, Edmonton, Ottawa, Winnipeg, Vancouver, Waterloo Region, Surrey, Quebec City, Hamilton, Halifax, Laval, London, Gatineau, Saskatoon, Burnaby, and Longueuil.

The study looked at police funding and how it varies across Canadian municipalities over a long period of time. The data from 2010 to 2020 showed wide differences in spending. For example, Vancouver spent more than double per capita on policing in 2019 than Quebec City, highlighting the complexity of the interactions between crime rates and police funding.

Other studies have also had mixed results regarding the relationship between police funding and crime. A A 2014 found no clear relationship between crime rates and per capita police expenditures in Canadian provinces, and a 2015 studyof 50 Canadian municipalities found that higher spending on police was associated with higher rates of violent crime, but the direction of the relationship was not established.

Research on police funding is limited in Canada, partly due to the lack of publicly available data on police spending. The study calls for improved publishing of police expenditure data, and for future research to examine whether funding decisions may be based on past crime rates and explore whether investments in police impact future crime rates.

Although the authors do not make specific policy recommendations regarding police budgets, the findings raise questions about the reasoning for such vast differences in police funding across the country despite overall downward crime rates.

Canadian Public Policy, Volume 49 Issue 4, December 2023, pp. pp. 383-398

By Philip J. Cook and Ashley Mancik

In 1962, the FBI reported a national homicide clearance rate of 93%. That rate dropped 29 points by 1994. This Great Decline has been studied and accepted as a real phenomenon but remains mysterious, as does the period of relative stability that followed. The decline was shared across regions and all city sizes but differed greatly among categories defined by victim race and weapon type. Gun homicides with Black victims accounted for most of the decline. We review the evidence on several possible explanations for the national decline, including those pertaining to case mix, investigation resources, and citizen cooperation. Our preferred explanation includes an upward trend in the standard for arrest, with strong evidence that although clearance-by-arrest rates declined, the likelihood of conviction and prison sentence actually increased. That result has obvious implications for the history of policing practice and for the validity of the usual clearance rate as a police performance measure.

Annual Review of Criminology, Volume 7, Page 59 - 83

By Matthew P. J. Ashby

The COVID-19 pandemic led to substantial changes in the daily activities of millions of Americans, with many businesses and schools closed, public events cancelled and states introducing stay-at-home orders. This article used police-recorded open crime data to understand how the frequency of common types of crime changed in 16 large cities across the United States in the early months of 2020. Seasonal auto-regressive integrated moving average (SARIMA) models of crime in previous years were used to forecast the expected frequency of crime in 2020 in the absence of the pandemic. The forecasts from these models were then compared to the actual frequency of crime during the early months of the pandemic. There were no significant changes in the frequency of serious assaults in public or (contrary to the concerns of policy makers) any change to the frequency of serious assaults in residences. In some cities, there were reductions in residential burglary but little change in non-residential burglary. Thefts of motor vehicles decreased in some cities while there were diverging patterns of thefts from motor vehicles. These results are used to make suggestions for future research into the relationships between the coronavirus pandemic and different crimes.

Crime Science 2020 9:6

By Eric Halford, Anthony Dixon, Graham Farrell, Nicolas Malleson and Nick Tilley

Governments around the world restricted movement of people, using social distancing and lockdowns, to help stem the global coronavirus (COVID-19) pandemic. We examine crime effects for one UK police force area in comparison to 5-year averages. There is variation in the onset of change by crime type, some declining from the WHO ‘global pandemic’ announcement of 11 March, others later. By 1 week after the 23 March lockdown, all recorded crime had declined 41%, with variation: shoplifting (−62%), theft (−52%), domestic abuse (−45%), theft from vehicle (−43%), assault (−36%), burglary dwelling (−25%) and burglary non-dwelling (−25%). We use Google Covid-19 Community Mobility Reports to calculate the mobility elasticity of crime for four crime types, finding shoplifting and other theft inelastic but responsive to reduced retail sector mobility (MEC=0.84, 0.71 respectively), burglary dwelling elastic to increases in residential area mobility (−1), with assault inelastic but responsive to reduced workplace mobility (0.56). We theorise that crime rate changes were primarily caused by those in mobility, suggesting a mobility theory of crime change in the pandemic. We identify implications for crime theory, policy and future research

Crime Science 2020 9:11

By Manne Gerell, Johan Kardell and Johanna Kindgren

The covid-19 disease has a large impact on life across the globe, and this could potentially include impacts on crime. The present study describes how crime has changed in Sweden during ten weeks after the government started to implement interventions to reduce spread of the disease. Sweden has undertaken smaller interventions than many other countries and is therefore a particularly interesting case to study. The first major interventions in Sweden were implemented in the end of week 11 (March 12th) in the year 2020, and we analyze police reported crimes through week 21 (ending May 24th). Descriptive statistics are provided relative to expected levels with 95% confidence intervals for eight crime types. We found that total crime, assaults, pickpocketing and burglary have decreased significantly, personal robberies and narcotics crime are unchanged. Vandalism possibly increased somewhat but is hard to draw any frm conclusions on. The reductions are fairly small for most crime types, in the 5–20% range, with pickpocketing being the biggest exception noting a 59% drop relative to expected levels.

Crime Science 2020 9:19

By Gian Maria Campedelli, Serena Favarin, Alberto Aziani and Alex R. Piquero

Recent studies exploiting city-level time series have shown that, around the world, several crimes declined after COVID-19 containment policies have been put in place. Using data at the community-level in Chicago, this work aims to advance our understanding on how public interventions affected criminal activities at a finer spatial scale. The analysis relies on a two-step methodology. First, it estimates the community-wise causal impact of social distancing and shelter-in-place policies adopted in Chicago via Structural Bayesian Time-Series across four crime categories (i.e., burglary, assault, narcotics-related offenses, and robbery). Once the models detected the direction, magnitude and significance of the trend changes, Firth’s Logistic Regression is used to investigate the factors associated with the statistically significant crime reduction found in the first step of the analyses. Statistical results first show that changes in crime trends differ across communities and crime types. This suggests that beyond the results of aggregate models lies a complex picture characterized by diverging patterns. Second, regression models provide mixed findings regarding the correlates associated with significant crime reduction: several relations have opposite directions across crimes with population being the only factor that is stably and positively associated with significant crime reduction.

Crime Science 2020 9:21

By Martin A. Andresen and Tarah Hodgkinson

The COVID-19 pandemic has dramatically affected social life. In efforts to reduce the spread of the virus, countries around the world implemented social restrictions, including social distancing, working from home, and the shuttering of numerous businesses. These social restrictions have also affected crime rates. In this study, we investigate the impact of the COVID-19 pandemic on the frequency of offending (crimes include property, violence, mischief, and miscellaneous) in Queensland, Australia. In particular, we examine this impact across numerous settings, including rural, regional and urban. We measure these shifts across the restriction period, as well as the staged relaxation of these restrictions. In order to measure the impact of this period we use structural break tests. In general, we find that criminal offences have significantly decreased during the initial lockdown, but as expected, increased once social restrictions were relaxed. These findings were consistent across Queensland’s districts, save for two areas. We discuss how these findings are important for criminal justice and social service practitioners when operating within an extraordinary event.

Crime Science 2020 9:25

By Samuel Langton, Anthony Dixon and Graham Farrell

Governments around the world have enforced strict guidelines on social interaction and mobility to control the spread of the COVID-19 virus. Evidence has begun to emerge which suggests that such dramatic changes in people’s routine activities have yielded similarly dramatic changes in criminal behavior. This study represents the frst ‘look back’ on six months of the nationwide lockdown in England and Wales. Using open police-recorded crime trends, we provide a comparison between expected and observed crime rates for fourteen diferent ofence categories between March and August, 2020. We fnd that most crime types experienced sharp, short-term declines during the frst full month of lockdown. This was followed by a gradual resurgence as restrictions were relaxed. Major exceptions include anti-social behavior and drug crimes. Findings shed light on the opportunity structures for crime and the nuances of using police records to study crime during the pandemic.

Crime Science 2021 10:6