Through out history leaders have committed atrocious acts of genocide, then you have your every day people who are just plain rotten. What made them that way?

Was it how they were raised? Circumstance can have a huge affect on the raising of a child and how they turn out to perceive the world. In this case, Do the sins of the father pass on to the son or Mother on to Daughter?

Maybe it is economic standing. A person who needs money is more likely to be desperate for it than for a person who has financial stability. In this I imagine some one mugging some one else.

Most importantly I wonder if the very definition of evil changes with society?