swatman, personally, I don't mind frankly criticizing LEO's when they deserve it. But I agree with some others here - this was a tragedy all around.
Try a FATS simulator someday. I've never been in a lethal force situation, but I've been 'killed' a few times in a FATS simulator. Try identifying the object in a potential adversary's hand as he rapidly raises it towards you. Now, try it in dim light. Now try reacting properly while that is going on, and one of your partners is yelling 'gun!' and another is falling.
Sorry, but you put all of that together and I would probably have fired as well. The number of shots is an issue, but even there we've heard the guy was in the doorway in such a way that he didn't drop. We are trained to fire until the threat is stopped.
I don't know what really happened that night, but the story has been consistent from the start. And, if this is really what happened, then I cannot see why these men must be convicted of a crime.
IMHO, this is quite different from a no-knock.
Sometimes life throws us a cascade of bad coincidences which lead to multiple failures and tragedy. Tragedies are not crimes. And, these men should not pay a price here in order to atone for racism, corruption and brutality that has occurred elsewhere in the NYC PD.