It was obvious that David Dao – the guy violently thrown off that United flight because United wanted to give his seat to one of their employees – might have a concussion. His lawyer confirms that he does have a concussion. But a concussion is not all.

David Dao, a 69-year-old Vietnamese-American doctor, was hospitalized after Chicago aviation police dragged him from the plane as the airline sought to make space on a flight from the city’s O’Hare International Airport to Louisville, Kentucky.

Demetrio said the law stated that passengers could not be ejected from planes with unreasonable force. Chicago runs the airport and the city’s department of aviation employs the three officers who dragged Dao off the plane.