I'm not the kind of person to advocate a violent response, and we don't know the circumstances leading up to the start of the video though. I would say however, that the guy who received the beat down was obviously a bigot and, worst of all, a highly vocal one. I don't think that he received that much of a whooping (there was no blood on the floor that we could see), so I kinda feel like he deserved it.
Let me reiterate this, I do not advocate violence, but I feel that in a event like this, the actions of the group were closer to a parent giving a smack to their out of line child. The smacks obvious, the child obvious. I was occasionally hit by my folks an I'm fine.