I'm unclear how a procedure that might be illegal is related to buying a cheap ticket. We're talking about a man who bought a ticket, legally boarded a plane, a

I'm unclear how a procedure that might be illegal is related to buying a cheap ticket. We're talking about a man who bought a ticket, legally boarded a plane, and then was forcefully removed AFTER boarding. The CEO remarked: The man was removed because employees were following the “involuntary denial of boarding process.” How do you deny boarding to someone who is already boarded? United says its denial of boarding provisions only apply in the event of an “oversold flight." United defines oversold flights as: > A flight where there are more Passengers holding valid confirmed Tickets that check-in for the flight within the prescribed check-in time than there are available seats. Employees are not considered "passengers holding valid confirmed tickets that check-in for the flight within the prescribed check-in time." To reinforce this reality, the CEO admitted that the flight was not oversold. But most importantly, there are different laws for customers pre-board and after you've board the plane. There's a very specific set of rules that allow United to kick a boarded passenger off a plane(Rule 21 Refusal of Transport), but there's overwhelming evidence that none of it applied to Dr. Dao.