Either A) The cops intentionally shot an unarmed person (Breonna Taylor) on purpose, or B) They pulled an "Archer" style SUPPRESSIVE FIRE, and just fired blindly into a building with no regard to whom they hit. And lets remember, the one officer facing charges is because he put bullets into another apartment unit. They could've fallen back and taken cover as an alternative option.
So, yes I think any cop who discharges his weapon without it at least aimed* at the person they intend to kill should face, at least, manslaughter charges. And if they have a problem with that, they can find a new line of work.
*If theres reason to think they were indeed aiming at a legitimate target and missed due to stress, then charges are not fair