I remember as a kid hearing about a Who concert in Cincinnati, in which 11 people were trampled to death as the doors to the hall were opened. I was appalled: What would compel people to run over top of other people? It was just a concert! Not a fire. Not a shooting in a crowded place. No one was trying to get away. They wanted to get IN! I’m a little more cynical today but no less appalled to hear that 2,000 people bum rushed a worker at a Long Island, NY, Wal-mart on Black Friday, so they could...