As much as I like seeing people like that being put in their place, the guy weilding the bat could've gotten in some serious trouble. I guy I knew in Oskaloosa, IA was playing basketball one afternoon when some punk walked up and cracked him in the head with a bat. The guy that got hit had half of his face bones shattered and required many months of surgeries and therapy to even come close to having a normal life again. The kid that hit him was charged with willful injury and got like 10 years for it.
Granted, those guys were asking for it but the guy that stopped his car, got out, confronted the punks and played whack-a-mole with their heads could've easily driven away and reported it to the cops. If the punks that started the thing got his plate # and reported him for said game of whack-a-mole I betcha he would've faced charges.