The impact of police shootings on gun violence and civilian cooperation
利用明尼阿波利斯的911报警和ShotSpotter数据，研究发现警察枪击事件使枪支犯罪增加5-6%，同时民众报警减少1-2%，合计减少6-7%的犯罪报告，且影响在少数族裔社区更显著。
This paper studies the effect of police-involved shootings on gun violence and civilian cooperation with police, as proxied by crime reports made via 911 calls. To distinguish between crime reporting and crime incidence, we use administrative data on 911 calls and ShotSpotter data from Minneapolis. Exploiting the variation in the timing and the distance to these incidents, we show that exposure to a police shooting increases gun-related crimes by 5–6 percent, and decreases shots reported by 1–2 percent. Taken together, this implies police shootings reduce civilian crime reports to police by 6–7 percent. • We study the effect of police shootings on gun violence and crime reporting. • We exploit the time and location of less-publicized police shootings. • We isolate crime incidence from reporting by using ShotSpotter and 911 calls data. • Exposure to police shootings reduces crime reporting and increases crime incidence. • Results are driven by Minority neighborhoods and are not due to de-policing.