I am sorry, fb. Had it happen to my son and to my nephew. Always a gang of five or more and a single victim. Your son will have a case of the "I should have"s when he recovers. It's important that he know he did nothing wrong. Bullies always find a victim.

For now, I hope he recovers quickly from the physical effects. I also hope that these "poor unloved etc" animals get theirs if only to send a message that you cannot go around beating the crap out of innocent people even if your father was a bastard.