The illusory end of stop and frisk in Chicago?

Critics of stop and frisk have heralded its recent demise in several large U.S. cities. Proponents of stop and frisk respond that when the practice ends, crime increases. Both groups typically assume that the end of stop and frisk reduces the number of police-civilian interactions. We find otherwise in Chicago: The decline in pedestrian stops coincided with an increase in traffic stops. Qualitative evidence suggests that the Chicago Police deliberately switched from pedestrian to traffic stops. Quantitative data are consistent with this hypothesis: As stop and frisk ended, Chicago Police traffic stops diverged (in quantity and composition) from those of another enforcement agency in Chicago, and the new traffic stops affected the same types of Chicagoans who were previously subject to pedestrian stops.

Community policing does not build citizen trust in police or reduce crime in the Global South.

Is it possible to reduce crime without exacerbating adversarial relationships between police and citizens? Community policing is a celebrated reform with that aim, which is now adopted on six continents. However, the evidence base is limited, studying reform components in isolation in a limited set of countries, and remaining largely silent on citizen-police trust. We designed six field experiments with Global South police agencies to study locally designed models of community policing using coordinated measures of crime and the attitudes and behaviors of citizens and police. In a preregistered meta-analysis, we found that these interventions led to mixed implementation, largely failed to improve citizen-police relations, and did not reduce crime. Societies may need to implement structural changes first for incremental police reforms such as community policing to succeed.