Technically the fine print at the bottom of a ticket states that the airline reserves the right to to bump anyone off a a seat as is needed. The doctor didn't want to give up his seat and that was that. He got off the plane and then came back on, started hugging the seat and chanting that he wanted to go home. It was at this point that he was physically removed. In my opinion HE broke the law. The viral video does not show the whole story.