The job of the DA in this particular instance is to put forward structure for the GJ, along with witnesses that corroborate it, to bring charges against Wilson - at least if the DA wants charges brought.
The DA didn't provide structure nor potential charges, and the reason for that is obvious.
I don't know if Wilson should have been found guilty of anything but the DA basically guaranteed none of us will ever know with how he handled the GJ.
I'll be the first to admit idk much about the GJ process... I need to read up on that.
The DA said he gave them all the info so they could make the decision "on their own" about whether or not charges should be brought. Is that the DAs job. Idk, doesn't really seem like it. Seems to me that his job would be to try and convince the GJ to bring charges, I mean you wouldn't try a case "trying to be impartial" or whatever... As a prosecutor you would be tasked at trying to convict the defendant regardless of your personal beliefs in the case.
Maybe this should be a call for the justice system to create a separate group for prosecutions of police, judges and other members of the law enforcement/judicial system. It is a valid point that DAs are essentially caught in a conflict of interest when they're asked to prosecute the very cops and other officers that they otherwise usually depend on to do their jobs.