The ACAB people have never been opposed to laws or prosecution of criminals. The problem is that the cops and their powerful friends tend to be immune to those laws.
It's certainly true that some laws and some sentencing ranges are unjust, but that's different from saying that laws themselves ought not exist. And although we've seen several high profile cases recently where prosecutors are clearly dirty as hell, that's probably less common than the dirtiness ratio among the pigs.
I don't think its too spicy, I just think it isn't very smart or strategic.
The ACAB crowd obviously doesn't love Harris precisely because she's a cop, but as Transient Punk pointed out, the ACAB crowd didn't choose Harris and don't represent most of the Democratic party, who skew right-wing. (Whereas the back-the-blue types overlap much more with uncritical enthusiasm for Trump, who they see as an innocent man who has been wrongfully convicted by a corrupt and politically motivated justice system.)
The Democratic coalition made up of progressive, leftists, and more right-wing liberals holds together by pragmatically overlooking these divisions and cooperating against the even-further-right, and this meme sows division right before a major election where Democrats are divided (e.g. over Israel) and having a hard time unifying.
In that sense this meme will get a reaction, but again not because it is spicy but because it is divisive.
There's right wing misinformation going around that Kamala Harris prosecuted over 1900 cases of misdemeanor drug possession charges during her seven years as a DA - sending those people to jail.
THIS IS NOT TRUE!
she oversaw roughly that many cases, but ONLY 45 saw jail time, and since 2018 she's been a campaigner against the laws that jail people for minor possession charges. Convictions for such crimes drastically dropped during her time there.
I know the left always complains that the right don't check sources - but frankly no one does. So do better, and do basic research before spreading any information thoughtlessly. GET THE FACTS!
How is she a "cop" if she was a prosecutor? They're not even in the same branch of government. Police is executive branch, a prosecutor is judicial branch.