The Bystander Effect
First, a person watches as another person in line is pick pocketed, and does nothing. Then we get the aiding a fallen person clips, in which the appearance and gender of the fallen person influence the strength of the bystander effect.
Kitty Genovese was attacked and murdered by a man with mental illness. Over thirty people watched her being attacked for hours, listening to her screams, no one called the police. Explains the mechanism of the bystander effect and shows 2 experiments
(Intense subject matter.) Matthew Carrington died of acute water poisoning during a frat initiation. A room full of people watched him die, no one called 911. Interviews with both his mother and the frat brothers convicted for his death