I have to say mate, I think your group handled it bloody well. Not being dragged down to that pushy shovy, threatening level is very, very tough. Having one friend acting defensive showed you weren't prepared to be pushed around, while you didn't all get involved and escalate the incident. It was understandable one of you would retaliate with words, but at least it was just that: words. Getting the police involved scared them off with their tails between their legs. Your priorities were right, safety and getting your friend cared to. Honestly, well bloody done. Ideally, I'd react exactly the same, but I don't know if I would :P Hope your friend makes a speedy recovery. I'll just say this: never forget the two who brought this upon you. Not after weeks, months or years. Keep your friends close, but your enemies closer. Let them look over their shoulders for awhile.