The young men of the ghettos in the major American cities find themselves with absent fathers, either dead, exiled or in jail. In past eras, towns without fathers represented people who lost wars against neighboring tribes. A community without men is a community under occupation.
Therefore the young men feel by intuition that they have lost a war; they seek violence, retribution, and vengeance. They do all of this reflexively and cannot do otherwise. They naturally hate their neighbors, the ones with fathers, whom they see as having won an assumed war.