Video of police officers dragging a passenger from an overbooked United Airlines flight sparked an uproar Monday on social media, and spokesman for the airline insisted that employees had no choice but to contact authorities to remove the man.

As the flight waited to depart from Chicago’ s O’ Hare airport officers could be seen grabbing the screaming man from a window seat ,pulling across the armrest and dragging him down the aisle by his arms.

United was trying to make room for four employees of a partner airline on the Sunday evening flight to Louisville, Kentucky.

Other passengers on flight 3411 were heard saying, ” please, my God,” what are you doing? ” “this is wrong,” look at what you did to him” and busted his lip.

Passenger Audra D.Bridges posted the video on Facebook. Her husband Tyler Bridges said United offered 400 dollars and then 800 vouchers and a hotel stay for volunteers to give up their seats.

When no one volunteered a united manager came on the plane and announced that passengers would be chosen at random.

” We almost felt like we were being taken hostage, ” we were stuck there. You can not do anything as a traveller. You are relying on the airline.

When airline employees named four customers who had to leave the plane three of them did so.

The fourth person refused to move, and police were called, United spokesman Charlie Hobart said.

We followed the right procedures,” Hobart said.

With files from Associated Press.