A "quadrilha" is a term used in Brazil to describe a criminal gang involved in organized crime. These groups often engage in various illegal activities, such as drug trafficking, robbery, and extortion. They typically operate in specific territories and may have a hierarchical structure, with leaders and members assigned different roles. Quadrilhas can be associated with violence and conflict, both among rival gangs and with law enforcement. The presence of these gangs can significantly impact local communities, leading to increased crime rates and fear among residents. Authorities often work to dismantle these organizations to restore safety and order.