Wait, Mike Tyson did... Oh, well, I see your point... Never mind.
Well...
If the guy on his back, on the ground getting pummeled did it, it would be sort of understandable, to get the other guy OFF of him and stop the punishment.
In that situation, whatever you do to avoid being killed, goes.
But it appears as it if it was the attacker that did it.
Just psychotic...