Originally Posted by kane

While I agree that the cop went too far, you don't help someone by teaching them that if they have a problem the world will bend to them.

They should have just grabbed the desk, as others have suggested, and pulled it out into the hall to deal with this without disturbing the rest of the class. If you make the class leave then bring people to that person as you suggest all you are teaching them is that if they are unhappy they can act out and they will eventually get their way.