While I don’t recommend anyone tell the police to ‘F’ck Off’ while they are working on a traffic issue, it is perfectly legal to do so as long as the person isn’t interfering in their work. The person in the video below did say some ‘mean’ things, but he wasn’t interfering with the traffic investigation. He was also on a public sidewalk. In fact the PD were about to leave when they decided to attack him.
I keep telling the city a big 1st Amendment case is coming, if not several, and they are really screwed on this one. This is why they should all have body cameras, because these kind of arrests would start going away once officers start getting fired.
The first video is the incident (lots of cussing BTW) and the second video is the cameraman asking the PD what happened.