This article utilizes ethnographic methods and government documents to examine the self-policing and peacekeeping strategies of the Rainbow Family, a nonviolent acephalous intentional community that holds massive weeklong gatherings around the globe. It is a case study that examines the efficacy of these methods, comparing them to those traditional police agencies employ under similar conditions. It contextualizes these strategies by examining other utopian and anarchist communities and movements such as Critical Mass bike rides. This study demonstrates how smiling, chanting, listening, social pressure, and social capital all play into forming a more effective and less violent approach toward peacekeeping.