Research on rats shows that when animals live in crowded conditions, they live disorderly, violent lives. Humans are no different. Crowded inner cities are models of lawlessness; the crowded highways of Los Angeles encourage aggression by drivers, and even shootings. As our urban areas continue to grow in population density, these types of problems will surely also grow. That means more family violence and more fighting over available resources. The American dream will become just that-only a dream