So would you rather have 100% of police officers be leftist zombies? Or is it better for good people to be police officers?
Your statements are so extremely short sighted that it is not at all realistic. Maybe in some specific small locations it is like that, like in a few specific leftist shithole cities. But you are completely ignoring all of the different levels of jurisdictions that exist in America.
Town, county, and state police agencies all work in completely different ways, and the way that they work is completely different in different locations. Every state has different laws for how these work. And even within the same state, different counties often work in different way.
Most of the time in the County and Town police agencies the way they are run, the policies they have, and what things they do or do not focus on
are controlled by themselves and are determined by one person who makes these decisions. And this position, at least in the county level, is most often a political position that is appointed by public elections. Like the County Sheriff. And there are many examples of the County Sheriff hinself saying, "I don't consider that to be a crime so I am commanding all of my men to not enforce it."
A recent example of this is in Illinois where the governor made all kinds of executive orders to ban certain guns, and all the county sheriffs all over the state were making public statements saying they will not enforce it.