Why is this incident constantly referred to as a case of overbooking when it is clearly not. The people on the plane were there because they had been issued a boarding pass. Had this not happened they would not have been on the plane. This is clearly a case of airline incompetence in  not having any seats available for their own employees who were needed the following day in Louisville. After bribery didn't work to get 4 passengers off the plane they resorted to bullying. In the case of 3 passengers it worked. Unfortunately for the airline it didn't work so well for the fourth passenger.  Not only was he bullied he was also rather badly brutalized by the goons who pass for security at the airport. The airline and the airport officials will will come out of this one with a lot of egg on their chins. And rightly so. One can but hope they will learn something from it.  The airline CEO should also resign.