If a cop has his tiny feels hurt he is going to FIND a reason to pull you over.
Perhaps instead of sensitivity training we need some insensitivity training.
Every morning the police could spend a minute chanting "sticks and stones may break my bones but words will never hurt me".
No reason a cop can’t follow you. Maybe you flip ‘em off because you’re impaired...feeling a little too gutsy. So, they follow. Check your driving. I’ve been pulled over on flimsy PC...they can find it, if they look long enough. I always put my registration sticker on upside down. Got pulled over fot it once, because that’s all he could find. He was probably just fishing for lic/reg/ins non-compliance. His words when he told me why he pulled me over...”Your sticker is upside down. I’m not sure what I can do about that.”
Put a few of ‘em in prison for this kind of assault and battery under color of law, in general population, and this criminal behavior will end.