You stop the fight, however you're able. Yeah, it may happen tomorrow, or a block over. It may be that the roof kid was getting thrashed for beating the hell out of one of those boys the day before. Doesn't matter, you don't have the back story, and you're not a judge anyway. You've got kids fighting, and you stop it the one time you can. I know it's not an original thought, but I can't help feeling that a lot of societie's ills come from us acting a lot less and blaming a lot more. So when you see something, you step up.

Because I wound up in a lot of fights for the first few years of school, before I got a rep as a tough little shit not to be messed with, and my parents never ever knew.....I'd go knock on the door where you saw roof kid perched, or at least put a note through it. Sounds crazy, but parents aren't ALWAYS the most observant creatures.

G