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California’s Violent Crime Rate Is Diverging from the National Trend

By Magnus Lofstrom

In the decade preceding the COVID-19 pandemic, California's violent crime rate roughly mirrored the nationwide trend. But as of 2022, California's violent crime rate is nearly one-third higher than the US rate, a divergence driven largely by aggravated assaults.

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Assessing the Impact of COVID-19 on Arrests in California

By Deepak Premkumar, Thomas Sloan, Magnus Lofstrom, Joseph Hayes

At the onset of COVID-19, California’s criminal justice system was affected by shelter-in-place orders and other public health measures, along with law enforcement directives intended to minimize exposure to the virus. We found that pandemic arrest trends mirror mobility patterns, particularly early on. But other factors, such as a shift in policing strategies, also played a role.

Report

Racial Disparities in Traffic Stops

By Magnus Lofstrom, Joseph Hayes, Brandon Martin, Deepak Premkumar

Traffic stops have emerged as a key driver of racial disparities in law enforcement and an area of potential reform. Our new report examines whether certain types of traffic stops could be enforced in alternative ways that reduce racial disparities and risks to officers and civilians without jeopardizing public safety.

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Police Use of Force and Misconduct in California

By Deepak Premkumar, Alexandria Gumbs, Shannon McConville, Renee Hsia

Nearly 200 Californians die each year in police encounters. Amid growing concern over civilian deaths and racial injustice, we examine what the existing data can—and cannot—tell us about police use of force and misconduct. We also offer recommendations for strengthening the state’s ongoing efforts to improve police transparency and accountability.

Report

Racial Disparities in Law Enforcement Stops

By Magnus Lofstrom, Joseph Hayes, Brandon Martin, Deepak Premkumar

Recent debate over police reforms has centered on how law enforcement engages with people of color, prompted by continuing concerns over racial inequities in criminal justice. In our analysis of data for nearly 4 million stops, we examine how interactions—ranging from search to use of force—differ for Black and white people, while considering factors such as stop context and law enforcement agency.

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