Sure thing: "An event study design finds census places with early BLM protests experienced a 10% to 15% decrease in police homicides from 2014 through 2019, around 200 fewer deaths." - https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3767097

> You're claiming that the US, unlike the rest of the civilized world, can't address crime without having death squads summarily execute people for trivial or imagined offences every other week?

The US obviously doesn't have "death squads" who "summarily execute people every other week". Lol I can't imagine asking for a citation about police killings and then tossing this claim out there.