Boston Operation Ceasefire

https://video.wixstatic.com/video/f5df24_53f6fdb61d4b4e099a95ccc13169e9b9/480p/mp4/file.mp4

There has been a great deal written about Boston's Operation Ceasefire, but the original evaluation is at BRAGA, A. A., KENNEDY, D. M., WARING, E. J., & PIEHL, A. M. (2001). Problem-Oriented Policing, Deterrence, and Youth Violence: An Evaluation of Boston’s Operation Ceasefire. Journal of Research in Crime and Delinquency, 38(3), 195-225. It is online here.