This altercation starts after the motorcyclist drove between two cars in Yuma, Arizona, lane-splitting is illegal there. A guy in one of the cars got out at the next stoplight and ran over to punch him.

The dude on the bike was wearing a helmet cam, so it's all on video. He got off his bike, tackled the guy, and held him there while someone called the cops. According to the local news, neither of them got arrested.