Following a brief introduction and a discussion of the sociology of gangs, the document discusses different types of criminal gangs. The two types operating in Vancouver include structured formal gangs and loose-knit informal groups. Local criminal groups in Vancouver do not engage in establishing turf. They recruit members by befriending an individual, introducing him to the group, and gaining his trust. The recruit is then coerced into doing something illegal on behalf of the gang. Criminal gangs have a negative impact on youth, their families, schools, and the community. The five major lines of action which can be taken to respond to criminal gangs include community mobilization, opportunities provision, social intervention, suppression, and organizational change and development. This booklet contains a lesson plan and overheads to be used during the presentation.