Perhaps you're "doomscrolling". That can make one
feel ennui & resignation. We're making progress
precisely because all of these articles, videos, & suits
are made known. It's improvement. Before ubiquitous
cel phones & surveillance cameras, such abuses by
cops were covered up.
Remember that the problems used to be even worse.
The difference is that now we're more aware of them.
Its actually an eternal struggle with ups and downs throughout national History, and sometimes the citizenry is protected. Sometimes the police get to behave like mafia. Before the police there were the firemen, and they did the policing and they had their ups and downs, too.
The police are always given every dam cleanup job (which they shouldn't be), and they are always the alternative to joining the military. First of all every bit of crap that the town or city doesn't have anyone else to do the police must do, and they are always underfunded unless they begin to steal (which sometimes they do because they are underfunded). On top of that they have to hire the kids that want to see action, because its perceived to be a deadly job. Its no secret that there are always a percentage of young men that want to see action and consider: marines or police? So here is your recipe for a brute squad upholding the bottom of society, and don't they think that without them there would be no nice, kind patriotic society above them. They do, because they see the problems that most people don't want to see.
So it is that we are becoming aware of problems with the police, yet the emphasis has not resulted in the necessary conditions: better funding, better education, wider hiring net, more specific jobs. Instead we are just aware that cops are brutal. That they are, and they are all we've got.