2017 United Express passenger removal

On April 9, 2017, at Chicago O'Hare International Airport, four paying customers were selected to be involuntarily deplaned from United Express Flight 3411 to make room for four deadheading employees. One of these passengers was David Dao, 69, a Vietnamese-American physician who was injured when he was physically assaulted and forcefully removed from the flight by Chicago Department of Aviation Security officers.

Source: Wikipedia — 2017 United Express passenger removal (CC BY-SA 4.0)