My anecdote is real. I was walking back from a party to my girlfriend's house at 2AM, and a vehicle approached me head on and came to an abrupt stop. I was blinded by the headlights and a large man with gray hair jumped out of it carrying a baseball bat and charged me with it. He held it horizontally with both hands and rammed me in the chest, knocking me to the ground. He had already called the police, and lived a few blocks away. Neighbors woke up, and he asked them to update his location.
3 cars showed up. I was happily waiting for the police because the man was threatening to hit me in the head, and I knew I was innocent. The neighbors were all away, watching from their porches. The cops showed up, didn't believe me at all, and 100% believed the man who had just fucked me up with a bat. It wasn't a fun night.
Keep in mind, I was already hurting from the bat when I got cuffed and tossed down.
You are constructing a straw man here, by acting as if I'm against cops doing the same thing. Of course I'm not. I'm simply observing that individuals should first change their own behavior before expecting changes from others. This goes for the cops too. They should respect people even if they are being disrespected and called pigs or whatever.
I'm against all forms of abuse of power, and I take huge issue with police unions and departments sheltering bad actors. It's deeply frightening to me to think about abusive people being given a license to commit violence with impunity.