I don't know in what country you live. I live in The Netherlands, one of the richest countries, with police which is very mild compared to other countries. They are 'trained' to de-escalate, to use the least amount of violence, to try to talk first. A force they 'try' to be inclusive, with a reasonably high percentage of women and different ethnicities, promoting to be open to LGBTQ+.

I can tell you with certainty, they are biased and racist as fuck, corrupt, abusive, above the law.

I assume you view the world through (male) white glasses from a rich country within the EU? The cops are there to protect your rich white privilege, you don't have a clue what it is like for poor people and people of color. Police is not what it is supposed to be in an ideal world. They should be abiding the law, enforcing the law, protect ALL citizens, be unbiased, treat everyone the same whether they are rich, poor, whatever their religion or ethnicity, whatever gender, political view, etc. They fail on all these points. Even in progressive countries like The Netherlands or Germany.

Next to that, the far right is on the rise. They love to enable and use the police to enforce their will.

Look at all the protests. The protests by the left are struck down with brute force and loads of arrests. Protests of the right are mostly left alone, with maybe one or two arrests if any. Here in the Netherlands farmers were left alone to lock down the entire infrastructure of the country, for many days, with loads of destruction (including driving a tractor into a municipality building) with barely any arrests or consequences. The cop who opened fire on a tractor which drove at him fast and refused to stop got into trouble, not the guy driving the tractor.

A hand full of climate activists blocking a single road were beaten and arrested with brute force, after which they got hefty fines.

So fuck the police.

Society has objectively gotten less violent. Morality and ethics are subjective, so I'm not going to touch on those. Every violent crime metric is, year over year, decreasing, and it's not because of the boot on our collective necks.

We'd all be better off without armed thugs whose only job is to protect the property of the ruling class. State-sanctioned violence just waiting to be dispensed by the waiting batons of the blue mafia.

Many European countries have better police, but the systemic critiques still hold. You just have functioning systems to mitigate their worst behavior. The us has something called qualified immunity, which effectively makes them immune from civil penalties.

To explain why many Americans don't like cops, here's some fun stories from the last few years:

Misissippi police buried 215 people in an unmarked mass grave, at least some of which were killed by cops. https://www.pbs.org/newshour/show/families-in-disbelief-after-hundreds-of-bodies-found-buried-behind-mississippi-jail

Crime dropped when the NYPD went on strike https://www.nytimes.com/2023/07/02/opinion/half-the-police-force-quit-crime-dropped.html

Multiple studies have found police have a domestic violence rate significantly higher than average averagehttps://www.theatlantic.com/national/archive/2014/09/police-officers-who-hit-their-wives-or-girlfriends/380329/

The Los Angeles sheriff's department is run by violent gangs. https://www.newyorker.com/magazine/2022/06/06/the-la-county-sheriffs-deputy-gang-crisis