Shootings aren't the only abuse. When a cop shoots their weapon, there is a bunch of paperwork, body cameras get reviewed, lies have to be created to cover it up, etc etc.
Lesser forms of violence get little or no scrutiny. The officer who killed George Floyd didn't have didn't have any problem with sitting on his neck for nearly 10 minutes and his partner didn't see fit to stop him even though the 2 rookies with them and multiple witnesses tried (verbally) to get him to stop. It's pretty clear the Floyd arrest was not that unusual for this guy.
The other big problem is "Discretion". Cops are encouraged to pull people over for random things and what happens after people get pulled over varies greatly based on who you are. If you are black, a broken tail-light pull over can quickly turn into a vehicle search and escalate from there. This hasn't improved either.
> Yes there are probably 8%~10% that are psychos and I think most officers wish they could get rid of those people from their ranks too,
The problem with the "Bad Apple" theory you espouse is that in so many cases the other officers at the incident, the police department, and the union are perfectly willing to circle their wagons and cover up for the Bad Apples. Cops refusing to stop bad cops and lying to protect them is super common. It's become clear that so long as cops are policing cops, the bad apples will remain.
> but hating police just for hating police is childish. All these people calling for disbanding feel like they're just children.
I suspect the people who hate cops, hate them for a good reason. Likewise, I suspect the people who call for disbanding cops honestly feel like it's the best solution to a difficult problem. Yes, some cops do amazing things for people... but for a lot of people an encounter with the police is literally the most dangerous experience of their lives. In order to address this problem, you need to fix that last bit or we're going to see this problem over-and-over again.