An off-duty Jacksonville police officer in his own car pulled out in front of a driver, then threatened the driver with a ticket for causing the problem, and the entire incident was caught on video.
The driver captured the ordeal on dash cam video and posted it on YouTube.
The officer involved was Assistant Chief Leonard Propper, who is head of the Jacksonville Sheriff's Office's special events unit.
Sheriff John Rutherford said Propper's actions were wrong. Propper said it happened about four months ago, and he did not want to comment.
The YouTube video posted by Jax Dash Cams shows a driver with a dashboard camera, and it also posts his speed at the top of the screen. A car pulled out in front him while he was recording.
"Seriously?" the driver said.
The driver of the white BMW in the video is Propper. At a traffic light just up the road, he got out, showed his badge, and the confrontation began.
"No sir. No sir," the driver said.
"Mother (expletive). How fast do you think you need to go on this road?" Propper said.
"I had a --," the driver said.
"You want to make this serious? Pull over right now and I will give you a $200 ticket," Propper said.
"I had it," the driver said.
"Pull over right now and I will give you a $200 ticket," Propper said.
"I had it pinned at 45 (mph), sir," the driver said.
"You better pay attention to what you are doing," Propper said.
"I had," the driver said.
"You keep running your (inaudible) like that, that is how people get killed in the street," Propper said. "Now pay attention and drive defensively."
"Why did you pull out in front of me?" the driver said.
Propper then went back to his car.
Channel 4 crime and safety analyst Ken Jefferson, a former Jacksonville police officer, weighed on on the incident.