Of course they aren't morally comparable, but guess what? That's i-r-r-e-l-e-v-a-n-t. Idgaf whether George Floyd had an unpaid parking ticket in his past or he held a pregnant woman at gunpoint. That's wholly irrelevant to whether his death at the hands of the police is justified. The police have one job and one job alone: to bring the accused to a court and a jury. One's past convictions have NOTHING, and I mean NOTHING to do with what the police are supposed to do. Even if someone is in the process of doing a crime, it is STILL not the police's job to carry out capital punishment. It doesn't make a police killing okay if it was found out that the person they killing was a bad person. Moral importance is irrelevant here.