In this case restraint was shown. That young guy could have simply started whaling away on the woman, and it was obvious he was tempted, but his friends brought him back from the brink of being just as bad as her in his own way. The slippery slope to Bernard Getz is filled with righteous anger. Though I do take your point that sometimes people must act (and I have acted in the past) Just don't confuse vigilantism for Justice.