What would the alternative be? I have never heard of a realistic solution that will be anywhere near the Overton Window and also backed up by data. Again, the last time Americans went without cops (CHAZ), it was a total disaster that "replaced" cops with people who did a far worse job when tasked with the same responsibilities.
I'm not criticizing your use of the word "murder."
"I dislike cops because they shoot people to solve a crisis. Anyway, let's shoot people about this crisis." - a lot of people, apparently
That just makes cops more paranoid and thus more likely to shoot someone who isn't a threat.
It's not hard to make it through the application process as a compassionate, clever person.
It's just hard to stay employed while butting heads with supervisors that aren't, and the public sends you thoughts and prayers from the sidelines. Sure, they'll riot when evil cops are caught doing evil stuff, but they do absolutely nothing to notice or stop good cops from getting forced out.
Source: My time in law enforcement and my interactions with the public on Reddit where I told my story.
"Liberal" doesn't mean what you think it means. Liberals generally don't want to abolish the police. You're thinking of anarchists.
People will not have any interest in going without law enforcement for X days/weeks/months/years while you reboot everything.
I maintain that firing bad people and hiring good people is the only realistic way to increase the Good:Bad ratio high enough that many of these problems will evaporate.