Facilitating police reform: Body cameras, police-involved homicides, and law enforcement outcomes

• 成果类型: Article
• 署名作者: Kim, Taeho
• 署名单位: University of Toronto
• 刊物名称: JOURNAL OF PUBLIC ECONOMICS
• ISSN/ISSBN: 0047-2727
• DOI: 10.1016/j.jpubeco.2025.105424
• 发表日期: 2025
• 关键词: Policing; Body cameras; monitoring; bureaucracy

摘要

Body-worn cameras (BWCs) have emerged as a crucial reform to restore police legitimacy. However, there remains limited evidence on the conditions under which BWCs reduce use of force and affect broader agency-wide outcomes. Using a quasi-experimental event study design, I analyze data from 593 U.S. police agencies to estimate the effects of BWC adoption. I find that reductions in police-involved homicides are heterogeneous-concentrated in regions with higher prior levels of such incidents and in agencies with stricter activation requirements, with no measurable change in low-incident regions or agencies with weaker policies. This study also provides the first evidence on agency-wide outcomes, finding no significant trade-offs in overall arrest or crime rates. These findings offer insight into when BWCs are most likely to enhance police accountability and performance.