In this paper, the author first argues that the fact that local authorities have referred to street gangs in an overly broad and overly narrow manner has led to the multiplication of punitive normative systems to deal with street gangs, including the combined action of the following three systems: criminal law, regulatory criminal law and immigration law, and led to an expansion of the repressive field. In turn, the concurring action of these three normative systems has had dramatic consequences for the communities in which street gangs are potentially active, exacerbating the tensions with State's representatives, feeding into stereotypes, contributing to maintain the precarious conditions of the community members and creating further youth delinquency.