WW_D?

This weekend I am charged with looking after my three youngish cousins. I brought their dog, Daisy, with me to pick them up at the bus stop which is oddly enough in front of another school, none of which attend. The bus was either late or I was given incorrect information to begin with because I ended up waiting around at least 15 minutes, during which I was witness to a questionable something. As I artfully prevented Daisy from eating (too many) plants and blades of grass a group of youngish (at least shortish) teenagers in a field behind the school caught my eye. There were at least 20 and huddled in a circle. I have 20/16 (as never let anyone forget) but I could not figure out what the hell was going on. I heard the odd F bomb but not in an especially angry tone, no one seemed to be too worked up - but still I watched. Then a smaller group broke away and then two more boys did the same and it quickly became clear that one of them was some sort of target. I flashed back quickly to the bloody images I've seen of MS-13 members getting 'jumped in' and had a bit of a panic attack. What the hell am I supposed to do when people start randomly fighting. It didn't look so bad - almost as if it was play fighting, but I couldn't be sure. It was over quickly and the offenders left - but the boy who received the pseudo blows called after one which obviously was like poking a bear and the boy came running and ended up throwing the other boys Bike around. Yeah - this is pretty much how grade 9 fights go down in Oakville. I was tut tutting the adults who walked by or watched and said nothing then realized - I'M JUST LIKE THEM. But really what could I do? I could sic Daisy on them, letter her lick them a couple times and then run. Or I could just let it play out - no one got hurt really, but everyone got away with what they did.