Police are the coercion arm of the U.S. Government. If you don't like the government, you should not like cops, because you already know that it's only a matter of time until everything you want to do is illegal, if not already.
They're gonna be the ones who take your guns, they're gonna be the ones who arrest you for driving an internal combustion car when the bugpods finally get their EV Utopia, they're gonna be the ones who take your kids away when you tell them not to go on HRT and mutilate themselves. They're gonna be the ones who kill you in a no-knock raid when your uppity champagne socialist neighbors SWAT you for loading your rifles into your trunk on range day.
Yes, there is plenty of reason to hate cops if you aren't a criminal. They'll eventually make you a criminal, given a long enough timescale, and sometimes they don't even need that excuse to kill you. 1998 was the last year that you could trust a cop not to be a pig. Two SCOTUS rulings in 1999 started the downward trend (the one where police academies can discriminate against +110 IQ individuals, barring them from entry, and the one where "To Protect and Serve" was legally classified as marketing, and they do not have an actual duty to do so), and 9/11 amplified it to militarize them. Now, it's appropriate to assume ACAB. Black Lives Matter/Antifa was right about this one thing.
Also, Uvalde proved to everyone that these guys are cowards. When they pull you over for a routine traffic stop, those faggots always have a hand on the holster. They care way more about their own lives, than anyone else's, in any situation, and are the most protected class in all of society, even moreso than politicians and soy-based alternative-lifestylers.
Do not talk to cops. You will never be friends with a person who can put you in a cage. They do not respect your humanity or personhood. They will humiliate and harm you if given the opportunity. They're not gonna fuck you if you simp for them. Don't give that behavior any respect unless you're faking it to get out of something. They are, at their absolute best, a passive enemy, and can be an aggressive one, if you look at them funny.