In the midst of a police action insisting upon one’s “rights” and hassling the officer is bound to worsen the situation. Better to go to court and sue for illegal arrest than be an ass and get into an altercation with the police.
The man with the gun and the badge is in control until you get in front of a judge.
And what country are you from? Police [are supposed to] have this thing called Probable Cause. Riding with a person who fails to signal a turn is not probable cause for electric shock therapy.
One thing that absolutely blows me away is that cops - especially those of the federal variety - have looser rules of engagement than soldiers in combat. Trust me, a soldier who had done to a detained combatant what those cops did to an American citizen would face a court martial. Doubt me? Do just a little bit of research. Hint: Lon Horiuchi...