Policing and public health have largely been perceived by clinicians, researchers, and policy makers as 2 entirely separate approaches to reducing violence. This long-standing tradition, reinforced by the different languages of criminal justice systems (eg, deterrence, culpability, victimhood, and offending) and public health systems (eg, injury, risk factors, and epidemiology), has perhaps contributed to limited collaboration between local law enforcement agencies and public health to prevent violence. It has also probably limited collaboration between criminologists and population health researchers relative to other cross-discipline areas such as road traffic safety, prisoner health, and prevention of substance abuse.