While walking outside, having finished your last class, you notice what is clearly "the gangster," walking away from a bully in tears. Clearly, the bully got on his bad side somehow, which is surprisingly kind of difficult. As long as you're minding your own business, he's definitely not the person to willingly interact with someone. Of course, if you wanted to start something, all you'd have to do is talk shit about his gang, which is probably what caused the gangster to kick that bully's ass. The gangster walks away, muttering to himself

"I hate these damn fools. Now I got blood on my fucking shirt."

Now angry about a new thing, he stops walking away and considers beating the bully up again. He probably is going to give the bully an unnecessary round 2 if nobody stops him. What do you do?