You'll note that his family doesn't trust our local DA, and they have good reason not to. It comes down to the jury, and they get selected for the bigots and doctrinaire.
But the real problem is that, with but a few exceptions, they're not trained to handle the insane. Make the person black and prejudice plays a hand.
The city of San Diego has Pert, the Psychiatric Emergency Response Team.
But that involves special training, and it only came about after the city got a ton of complaints back in the 80s. What we really need is for all cops and deputies at all locations to get the training, which would save money in the long run. We need to start being pound wise and penny foolish.