Just found out about one that no one has ever really talked about. Yes, it happened in 2015, but it involved a black officer shooting and killing a white woman. The officer reported to a domestic disturbance call, apparently was attacked by a dog (suffered one bite), slipped on the ice, and discharged his firearm (twice) accidentally striking Autumn Steele [once] who had her young child beside her.
The officer can be heard on video telling his partner: "Oh, my God, no! Oh, fuck, Tim! Shit, Tim! I'm fucking going to prison, Tim!"
He did not go to prison. The lawsuit was settled out of court.