New York City’s Crisis Management System

John Jay Research and Evaluation Center (JJREC) collaborated with NORC at the University of Chicago to assess the implementation of violence interruption services, wraparound services, and technical assistance services coordinated by community-based organizations supported through New York City’s “Crisis Management System” (CMS).

Arrests Expose Rift Between N.Y.P.D. and ‘Violence Interrupters’

Overall, the interrupter model appears to be effective, according to a 2017 study by the John Jay College of Criminal Justice. In one Bronx neighborhood, the number of shooting victims fell 63 percent during a period when interrupters were active compared with rates before the program began, the study found.