For example, like most primates, when humans are in a dangerous situation they most likely respond with aggression. They had to learn to fight like animals in order to secure their own safety. Without technology our ancestors had to hunt for their own food. Thus, the drive for violence was born. As cultures diversified, humans turned their aggression on one another.
Social factors are also a major cause for people s aggression.
Man need a way to lash back for life s hardships, and violence seems to be the easiest choice. The inhabitants of these slums turn to violence to console themselves. They see people getting money for violent acts and want to get in on the action. Young men commit most of the violent crimes. These are the men that feel hopeless because of poverty, and want to build their self-esteem.