What makes good people do bad things? Please view the following Ted Tala and then write a

What makes good people do bad things? Please view the following Ted Tala and then write a 2-3 page paper that addresses the following:
Explore the question of how and why good people turn bad.
Discuss Zimbardo’s stance on the dividing line between good and evil.
What would you say is the most important trait that determines if a person is good or evil?