We believe also that you're responsible for your own actions. That include sthe guys who attacked him while holding the gun. It is also entirely stupid to attack a person with a gun rather than backing away slowly and moving elsewhere. You won't win in the situation 99/100 times so you should extract yourself from the situation. He was not breaking the law by being there with a gun. If he was this court trial would have had a completely different verdict. As with most things in life there are two sides to the same story and two sets of responsibility and expectations.