This guide begins by describing the problem of retaliatory violent disputes and reviewing factors that increase the risks of such disputes. It then identifies a series of questions to help you analyze your local retaliatory violent disputes problem. Finally, it reviews responses to the problem from evaluative research and police practice. Although the guide draws heavily on the authors’ research and practice findings from the BJA/CNA Strategic Innovations in Policing-funded initiative in Rochester, New York—one of the few police initiatives explicitly focused on retaliatory violent disputes—the information in this guide is also supported by the broader body of research and practice on retaliatory violent disputes.