tbh what i've found really really disturbing have been some of the revenge threats made against the aggressors in these videos. Don't get me wrong those kids are assholes and need to be made to realise that and I'm generally a strong advocate for very harsh penalties for violent crimes, but ultimately I want the punishment to have a rehabilitative effect.
I have read things ranging from shooting the kids (and i emphasize these are kids, they look like they are 16 years old) to bashing them in front of their parents to rendering them quadriplegics - I mean seriously is this not as bad if not worse than what was depicted in the video? I think its a huge irony that if someone were to find one of those aggressors and film him being beaten to a pulp and posted in on youtube, the response would probably be hugely positive, even though it is essentially the same thing as what he did to the Asian kid =/
secondly, as with all internet stories we don't know the full picture. What if hypothetically that group of kids had been attacked earlier by the other guy? People would now probably be cheering them on for getting revenge. Maybe this was just a simple case of bullies picking on a lone kid but until we know better we should never assume that it is.
What I hope happens is that these kids get arrested and punished in such a way so that they feel shame for their actions, but not humiliation to the extent that they just hate society.