The difference is that the criminal justice system is supposed to address every single case. Any individual case of a public prosecutor refusing to prosecute a murderer (because they're also employed as a cop) is an injustice at the scale of the entire jurisdiction. Statistics on the race of the victims aren't actually necessary to get outraged. So your argument, at best, applies to the political framing of the subject rather than the core issue.

Nope, and nope. Neither is true, and both are propaganda.

Sorry that goes against the every-day experience of black people in the USA; one of the reasons so many people got on the streets.

For many people, the idea that black people don't commit crimes at a higher rate than others goes against their every-day experience in the USA.

Maybe your response is ironic: I genuinely can't tell. But clearly "my every-day experience justifies my actions regardless of the facts about (my view)" is not a fair rebuttal, because anyone can make that claim about anything.

Cite?

For starters:

[1] https://www.nyclu.org/en/stop-and-frisk-data

[2] https://www.prisonpolicy.org/blog/2018/10/12/policing/

And [1] is in ostensibly "liberal" New York city.