"Knock-Out" OR "Waffling"'... what is more cowardly?

There is a new fad spreading among our young thugs. Unsuspecting pedestrians are sucker-punched with great force while video-taped. One person has died already from this. It occurs to me that this cowardly act is not as cowardly as noodling or waffling a prisoner. At least the pedestrian might fight back. The handcuffed prisoner has no chance to avoid getting his face slammed into the steel grid of the partition and no chance to fight back. I think cops who do this are bigger cowards than the thugs who play "Knock-Out".
http://www.youtube.com/watch?v=qF9lV319yg4