I would have said something to the 4 kids.
Years ago I was driving down the street on my motorcycle, 4 large guys were piling on a teen boy. I got off the scoot and told my girl to go and call 911 was before cell phones. I got them off that boy, 2 got banged up but what the heck it was a kid in trouble. Cops show up, kid was in a home and tried to run away. Cops told them men they cannot dog pile a kid in an effort to get him back into the building.
Awhile before that a couple boys were grabbed and found dead later on, jubert is now dead but that fear was prevailent and on everyones mind.
Cops said thanks and I went on my way.