It would appear that law enforcement officers aren’t the only ones with video cameras in their cars these days. This link will take you to a story line and a video of a traffic stop in St. George, Missouri. The material in the link will provide you with the details.
In addition to the video, take a look at the divergence of comments. It shows that perceptions range across the board.
I offer this one to you without comment as I have no background of the incident, nor do I have any idea of what took place afterward.
A postscript. I had a reader ask me what the mechanical voice was in the background that said “KA Band” and was ticking. I believe that would be the driver’s RADAR detector going off when the squad car pulled in behind him.