Because the girl appears to be black, and if that is so, and the bouncer had been white we would have possibly had the usual accusations of a racist nature etc, in what appears to be a massive over reaction by the said bouncer.
I'd say no chance looking at the stood up pictures before it kicks off.
Total overreaction yes, but that was staged by the filmer for me and the audio appears to be nicely cropped to make her a victim with the egging on...something is fishy. Getting up and laughing before he comes back implies got the reaction that was wanted. There's more to this than that clip and for that reaction, I would not be surprised if that wasn't the only encounter that night and he ultimately just hit red.