Not true. There is case law that allows for self-defense against unlawful use of force, or when when you reasonably believe the force was not coming from an officer (didn't announce, were not uniformed, believed to be imposters, etc).
But - to the OP's point, if you're trying to defend yourself against what appear to be police officers illegally shooting at you, the situation is just going to escalate. One police officer firing at you will shortly become many police officers firing at you. Taking cover or running is preferable to firing back at police.
Okay, but what if they just wear masks and use unmarked vehicles?
Then do they get a pass for shooting you in the back?
I was lucky that for unrelated reasons the trial didn't happen and none of the jury selection stuff went through, but in a few states you cannot just rely on this as an easy out. This is awesome, because for true believers, you can actually do jury nullification. This was actually somewhat recently and notably used: https://www.eenews.net/articles/bundys-acquitted-in-huge-set...
The whole group felt the felony charge was too much for that series of events. Somebody said "I don't want to vote on this". I suggested that is a valid option. The vote was the weakest of all the cases we covered. Several abstentions but just enough to send the case to trial.
To me that is nullification in practice. It is "the community" deciding that they don't believe the State is right in pursuing conviction. Juries are meant to be a randomized "council of elders" type body not just cogs in the machine.
Using your belief in jury nullification as a tool to get out of your duty as a citizen rubs me the wrong way. You have to participate in the functions of civilization if you want it to reflect your beliefs.
Steal a car to rush somebody to a hospital then return it after and the letter of the law will convict you as a felon. It is the jury that could decide, as representatives of the community, that you should not be a felon for saving somebody's life even if you technically stole a car.
In most states the jury instructions are to make their judgement based solely on the evidence presented to them. These instructions make a jury a cog in the prosecution machine. The purpose of a jury is a final check on the government's execution of the law by members of the community.
I think you're think of grand juries. They decide if there is enough evidence to go to trial, I.e. if the prosecution is just.
Even without grand juries, we'd still have juries that decide the verdicts. They decide if a conviction is just.
The main problem is the idea that I'm held captive by some fake contract to the state. I'm lucky that where I am the law is more just/libertarian than in most other places - meaning that in general the average arrested person is more likely to be actually guilty, but especially in places that are ultra authoritarian (i.e. Virginia), I need all the power I can get to protest their unjust system or I'm not going to have my time wasted.
https://www.reuters.com/world/us/us-supreme-court-backs-chal...
Hunter Biden trial would never have happened now too because of this - many people at the time wanted him to fight it out and be the poster child for this rather than the Pakistani guy in this version of the case.
So actually, you can indeed just say "yes" and than "vote your conscious" anyway, even openly - at least in the case of the few states that don't have "willing to nullify" as an acceptable reason to strike a juror during jury selection.
Note in this case guy was in an illegal state and also had cocaine.