It might be a more achievable goal than actually reducing police killings, so I don't think the idea should be entirely ruled out.
Are you volunteering to help redress the statistics?
More seriously, I feel sorry for the vast majority of decent police officers (in most civilized countries) who put their lives on the line to keep the rest of us safe and have to sometimes make split-second decisions, which may - or may not - later be deemed appropriate.
That said, in this case, I can't find anything to warrant what happened to Floyd. It's not as if he'd, e.g., been spraying machine-gun fire into a crowd, or appeared to have had a pack of explosives tied to his chest.
He just went in to buy a pack of cigs and paid with what the poor cashier kid thought could have been fake, who then alerted the police, otherwise the amount would have been docked from his pay.
I hope this young cashier is getting some kind of counseling help.