In these times, if you are angry towards them, a cop can use "agressive force" against you.
All they have to say is they felt like thier health and safety were at risk. And it is your word against theirs. Your video camera was a very good thing. He could have confiscated your camera and tape though.
Around my neighborhood a cop can write you a ticket for calling them any number of "colorful" words.
Apparently it is illegal to slander or curse at a cop, wether on duty or off.
Most of the time they won't do it due to the paperwork involved.
What ever happened to "serve and protect"?
'Nuff said, rant over....