If you have like multiple cameras running and the cop is completely giving it away, saying “I’m going to kill you, specifically for fun, not because I fear for my life, which I do not” then maybe. You might get away with it if they stupidly catalogued their own criminal acts as part of some corruption scheme that is later uncovered. And maybe his department doesn’t assassinate you afterward.

But in a normal circumstance, no. The justice system assumes its own justification, and if the cop dies then they’ll assume the cop was doing his job to the letter, and any threatening actions by the cop are retroactively justified because you demonstrated that you were a dangerous person. It’s an intentional catch-22.

If the cop is just a psychopath who decides that evening he wants to murder someone, then under the laws of the United States, it’s illegal for you to survive that encounter.

EDIT: Like, to be clear, it would be treated as a serious crime if George Floyd had lived another day on this earth

It really depends on the circumstances, but it happens sometimes

Depends on the context, people who survive shooting back during no knocks have gotten away with it.

If a uniformed pig on the street starts attacking you though, I’m unaware of any cases where somebody fought back and survived without being prosecuted

In Indiana at least, technically you can during a no knock raid.

Realistically they’d keep sending cops til they killed you I’m certain.

There was someone who was acquitted for a self-defense killing of a cop, sometime in recent decades. I distinctly recall reading about it, I’ll try to find documentation about it.

EDIT: I might be remembering the Ruby Ridge case, with Randy Weaver killing the marshall who’d just killed a 14 year old… Almost positive it was somebody else and a state or local PD cop though.