I once witnessed a very unpleasant spectacle at CDG, one of the reasons I avoid that excuse for an airport.
A young black woman in handcuffs was being dragged along the floor by 5 or six police officers, she was screaming and shouting, not aggressively but clearly in terror and desperation, presumably being taken to a departure gate.
I've no idea what she'd done, but whatever it was, I think that treating her like that was quite inappropriate and certainly not something the travelling public should be exposed to.