Crazy video shows a fight that broke out between a bus driver and a passenger while the bus was in motion.

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It happened on a Wisconsin city bus in January, after a passenger started a fight with the bus driver. The driver, Scotty Wells, has since been fired for leaving the wheel.

The surveillance video shows Wells confronting a 17-year-old high school student boarding the bus. In the police report, Wells claimed he had asked for the boy’s information after allegedly having problems with him on previous rides, including vulgar language.

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Wells told the boy, who was sitting down at the time, “When that boarder goes, the bus pass is no longer any good.”

The teen cursed at the driver and began punching him. Wells got out of his seat, punched the teen back and knocked him to the ground while the bus was still rolling. He reportedly told police that he feared for his safety.

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Video shows the bus rolling, until it eventually crashed into parked cars. The teen was arrested for battery and recklessly endangering safety. Kenosha Transit fired Wells for the incident. Now, the bus drivers’ union is trying get his job back.

Fox News legal analyst Lis Wiehl and defense attorney Jonna Spilbor debated the incident on America’s News HQ. Watch the brawl above and the legal debate below.