The Maricopa County Public Defender’s Office provides tremendous value to the community by serving an important public safety function. We seek effective dispositions for addressing the underlying problems that contribute to our clients' criminal behavior, thus providing them with their best chance to become productive and law-abiding individuals. Its mission is to provide quality legal representation to indigent individuals assigned to us by the court, thus safeguarding the fundamental legal rights of each member of the community.

The purpose of this report is to use data from a sample of recently booked arrestees in Maricopa County to examine the scope and nature of Maricopa County’s gang problem. In particular, this report supplements data presented in the bi-annual report on gangs conducted by the Arizona Criminal Justice Commission, which relies on official police data and their occasional white paper on gangs that relies on self-report data from school youth. We organized our analyses around six research questions: (1) what proportion of adult arrestees are involved in a gang, and what are the socio-demographic differences between those who are associated with a gang and those who are not; (2) what are the rituals associated with gang joining; (3) how do gang and non-gang arrestees differ in their experiences with crime, drug use and victimization; (4) what is the organizational structure and composition of gangs; (5) how do members socially identify with their gang; and (6) how and why do members leave their gang?