Why do people do evil/bad things?

Philip Zimbardo talking at google.  Philip goes in detail on how the power of the situation/environment can influence someone to  commit evil acts.  Contains Milgram and Stanford prison experiments but also shows how people can be hero’s by standing up for what is right.  If you haven’t seen the New York subway hero video it is a must see.

Stanford Prison Experiment 1971

The Stanford prison experiment was a study of the human response to imposed social roles on behavior. It was conducted in 1971 by a team of researchers led by Philip Zimbardo at Stanford University. Undergraduate volunteers played the roles of guards and prisoners living in a mock prison that was constructed in the basement of the Stanford psychology building.