Thought experiment:
Right now we have retaliation against cops in general - where you have some idiots employ some eye for an eye justice randomly against cops.
I mean in the essence you have complaints how African Americans feel discriminated as a result of unjust stereotyping employed by the police.
The reaction is the same as all cops are potentially corrupt/racist just like all human beings with dark skin color are generally suspicious/dangerous to racist officers.
What if instead of this behavior these ppl were capable of collecting evidence against a (group of) specific officer(s).
If they published incriminating material paired with assassination, showcasing how boundaries were overstepped, reckless behavior employed and the whole thing swept under the rug with help of a judge and/or sloppy internal investigations.
How different would the discussion be in such a case if the deceased officer(s) would be publicly discussed for abuse of power in the wake of death?
You could have a more complex situation where the accused party could be right and wrong at the same time in the public eye.
In a society with a rule of law the discussion might be different in the respect of said officer being a scumbag. But I'd still be against it as it was a murder. The shooter is not a judge, they are a murderer and should be treated as such.