Two American women were removed from a British Airways flight at Heathrow Airport after a fight.
Women fight over Trump's "Make America Great Again" cap.
The conflict began in the landing zone when one of the women demanded that the other take off her red cap, The Sun reports.
The argument suddenly escalated into a fight, which continued on board.
The incident occurred on Monday as passengers waited to board a British Airways flight.
The fight continued on board the Austin-bound flight when the two, who were flying in premium economy, collided in the cabin.
The plane's crew called the police to remove the women from the plane.
The passengers were not arrested, but were questioned at the airport.
The cap incident caused flight BA191 to Austin to be delayed by two hours.
