This document discusses gang activity and youth violence in Melbourne, Australia. It touches on several factors that can contribute to tensions like increasing cultural diversity, rising costs of living, and difficulties finding employment for new migrants. These stresses can weaken social ties and lead to hostility. The document also describes the history of organized crime in Melbourne tracing back to dock worker unions. Finally, it examines different types of gangs and some of the social and identity factors that can influence youth participation in gangs and street violence.