Transit officials in Oklahoma City released video from the attack on Wednesday.
The video shows a passenger punching the driver and pulling him from his seat while the bus was still moving.
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The bus veered off the road and crashed into a business.
A seat belt saved the driver from being thrown through the windshield, and amazingly, he was not seriously hurt.
The passenger was reportedly upset that the driver wouldn't let him off at an intersection that was not a designated stop.