"Alec Baldwin was rehearsing a scene that involved pointing a revolver “towards the camera lens” when the gun — which the crew had been told did not contain live rounds — suddenly went off and killed the cinematographer"
He wasn't waving it around as a joke, he was rehersing a scene.
Now there is dispute that Baldwin pulled the trigger. He says he didn't, an analysis of the situation says he must have, but if that is important or not is up to the trial.
By all accounts Alec Baldwin the actor was involved in a tragic accident.
There is still possibility the Alec Baldwin the producer is culpable. It's going to be much harder to prove, but it's a possibility.