Arnold Ventures 2020, Caterina Roman, Evaluation, Jeffrey Butts, JohnJayREC Products, Monographs, Violence, Work Products by Project Reducing Violence Without Police: A Review of Research Evidence November 9, 2020November 10, 2020by JohnJayREC Arnold Ventures asked the Research and Evaluation Center at John Jay College of Criminal Justice to review and summarize the research evidence for policies and programs that reduce community violence without relying on police.Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on LinkedIn (Opens in new window)