Really, you think nobody wants to be one? Many police forces have significantly more candidates than positions. Now, I will agree, the pay, depending on where they work, can be shockingly bad. But the hate they get are for the actions they take. It isn't necessarily the fact they (sometimes subjectively) enforce the law, its the way they treat communities, especially communities of colour. As others have mentioned in this thread, they didn't pump 90 rounds into the Highland Park shooter, he was arrested fairly civilly. And he killed six people and wounded 30. The black dude may have fired a gun, but was unarmed and running away. I'm not saying all cops need to be vilified, but the reality is that the "thin blue line" protects bad cops. And one bad apple can spoil the reputations of the whole bunch.
The reality here is the anger is not from the left media, which really doesn't exist. It's the fact that there are cowboy cops out there who act like they're in a movie. They shoot first instead of trying to de-escalate situations, especially when there is a black man involved. They harass people and do things that violate people's rights. And the worst part of it all is they are rarely punished. I'm a white man and rarely have interactions with the Toronto Police Service. But, I can say with almost certainty that they ignore me for the most part, unless I do something egregious. I cannot say that would be the case if I was black or brown. I believe I would be treated with respect if I was pulled over, but again, I cannot say the same would be true for a POC. And, I can only imagine what that would be like in Mississippi or Alabama...Hell, even the south side of Chicago.