Excessive alcohol consumption tends to instigate violence, particularly in and around alcohol-serving establishments. Policies that ban or restrict alcohol have been shown to defuse violence but impose restrictions on the community and may be unenforceable in certain contexts. Fewer evidence exists regarding policies that raise awareness among bartenders and patrons of the adverse consequences of excessive alcohol consumption. This study evaluates an intervention conducted by the Bogotá mayor's office and Colombia's largest brewery to empower bartenders, provide didactic materials to bar patrons, and offer food and non-alcoholic drinks to bar patrons. The intervention has two primary objectives: i) reduce the negative consequences associated with the over-consumption of alcohol and ii) defuse conflicts between bartenders and patrons, and among patrons, that might escalate to violence within and around bars. Our unit of observation is the street segment, nested within police quadrants. We first randomize 221 police quadrants into treatment and control groups. Second, in the 109 treated quadrants, we randomly select eligible street segments with alcoholserving establishments to receive the intervention. This design captures both direct effects of the intervention on violent brawls for street segments within treated police quadrants and potential spillover effects across police quadrants.