A doctor was dragged kicking and screaming from a United flight after being told that he was being bumped to make room for United employees who "needed" to be on the flight. Four passengers already on the plane were chosen at random to be bumped. Three left voluntarily, but the doctor refused to leave, saying that he needed to see patients in the morning.
http://www.zerohedge.com/news/2017-04-10/doctor-dragged-united-plane-after-computer-solves-overbooking-problem