Hmm... I couldn't tell who started it? The dope with the scarf (wearing a scarf in public, isn't that asking for trouble?

) appears to go over to white hoodie and then drags him to the ground...
At one point, one bystander trips one of the thugs, and gets punched in the face. Then he gets another punch as the thug is leaving.
Problem with the others not helping, half of them are women, and they only get in a fighting mood if you mess with their money. Another problem with getting involved, you jump in the middle of something like that, next thing you know the knives come out and you're slashed and stabbed to death. Oh yeah, and most people are nice, normal people without enough aggression to be effective fighters.
All it takes if one CHL carrier to shot that down with a bang. Where's Bernie Goetz when you need him?