i saw that video on tv yesterday and i gotta say i felt really uncomfortable the whole time. It's really sad and shocking.
Also it's just insane what a 'gang mentality' will do to kids or teenagers. One or two of them on their own and they're poilte and quiet enough, but put em in a group of 5 or more and they inevitably turn to a group of rude, disrespectful animals. and this is going by personal experience. sad and most unfortunate.