"Based on the available English language scientific evidence, the results of this systematic review suggest that an increase in drug law enforcement interventions to disrupt drug markets is unlikely to reduce drug market violence. Instead, from an evidence-based public policy perspective and based on several decades of available data, the existing scientific evidence suggests drug law enforcement contributes to gun violence and high homicide rates and that increasingly sophisticated methods of disrupting organizations involved in drug distribution could paradoxically increase violence. In this context, and since drug prohibition has not achieved its stated goals of reducing drug supply, alternative regulatory models for drug control will be required if drug market violence is to be substantially reduced."
Werb, Dan; Rowell, Greg; Guyatt, Gordon; Kerr, Thomas; Montaner, Julio; Wood, Evan, "Effect of drug law enforcement on drug market violence: A systemic review," International Journal of Drug Policy (London, United Kingdom: International Harm Reduction Association: March 2011) Vol. 22, Issue 2.