Surely you're trolling. Did you watch the end of the video?
Justice is never revenge. If courts and laws are being used for revenge, that's injustice and tyranny. That's what we currently have. Justice means "things in their place." Justice is doing right by others. Justice is helping the guy up, not knocking him down. Justice *was* preventing an accident, but became injustice when the guy assaulted the other guy. A court OF justice would use a jury of peers and all available evidence to decide if/how the attacker should be prevented from attacking again. Its not revenge, and it's not the state.