It was the 1960s. Ben Carson, 14-year-old ninth grader, was growing up rough in Detroit. And, one fateful day, the future neurosurgeon and Republican presidential contender got very, very angry. The argument, like many among teenagers, was about nothing: what radio station to listen to. Carson's friend Bob dared turn the dial on the transistor radio. "You call that music?" Bob said. "It's better than what you like!" Carson yelled back, grabbing for the dial. That could have been it - good friends have argued about greater things and quickly made up. But Carson found himself consumed by rage. "In...