The Plan Nacional de Vigilancia Comunitaria por Cuadrantes (PNVCC) is a new police patrolling program introduced in the eight major cities of Colombia in 2010 by the National Police. The strategy divides the largest cities into small geographical areas (cuadrantes), assigns six policemen to...

We study the effects of broken windows policing on crime using geo-located crime and arrest reports for 80 Colombian cities. Broadly defined, broken windows policing consists of intensifying arrests - sometimes for minor offenses - to deter potential criminals. To estimate causal effects, we...

Using the case of the cocaine trade in Mexico as a relevant and salient example, this paper shows that scarcity leads to violence in markets without third party enforcement. We construct a model in which supply shortages increase total revenue when demand is inelastic. If property rights over...

This paper attempts to evaluate the impact on crime of the restriction of late-night alcohol sales in Bogota and quantify the causal effect of problematic alcohol consumption on different crime categories. It is found that the restriction reduced deaths and injuries in car accidents and...