Street gangs have exploded in popularity worldwide. Tattoos, baggy pants, tagging, gangsta style clothes -- this unspoken threat is always just around the corner in most of the world's major cities. In search of a sense of identity and belonging that their world has denied them, young people are pushed into gangs by a witch's brew of violence, guns, drugs, racism, poverty, families under pressure, and ever-widening slums. Gangs exposes the roots of...