BBC News - Argentina: Troops deployed after looting at ski resort.
The other response comes from the thinking of Socrates and Plato. Their definition of evil/sin was ignorance of the Truth. If a person knew the Truth that we are all connected and One, then he would not be violent towards others (unless the person is suicidal). Most people do not hurt themselves: we don't shoot off our hands if we get angry at somebody, for example!
I also agree with some of the other folks who mentioned parental discipline and upbringing that taught them right from wrong. I think that has a lot to do with most people becoming "normal" and responsible citizens.
Ksholder: You asked a good question; it makes us all stop and think!