Wow... That last guy really didn't like the poor fella on the floor, he totally kept going even after all his boys went home for dinner!
Seriously though, what would you do if you were there ALONE watching that fight, would you:
A) Go try to stop the fight (Great idea, 1 of you against all of them, you'll end up like that poor guy lying on the pavement)
B) Just ignore it (Kinda sad, but whatever not your business, not your life)
C) Get to a safe area and call the Police, tell them what happens and wait for them to arrive
I'd like to think that I'd do (C).... Of course, my tough guy mentality says, A, but lets be realistic, I'd end up on the floor like that other guy. And B is very possible... think about it and drop the macho-ism for a second, how many time have you been in a bar/club whatever and seen a few guys going at it, and then either stayed and watched it get resoluted, or maybe your were on your way out, and were like "I don't give a fuck, a bunch of drunk asses" and you left, how do you know the fight didn't end up like that video...

We all say we'd step in and actually do something, but in the heat of the moment very rarely do people do anything! I don't think it means that all people are bad or we all suck, yes that video pissed us off too watch, but in the heat of the moment people react very differently.... Especially out in clubs and bars, you dunno the type of people that go out there, so you're like why the fuck should I even get involved, its not my fight