“Had they presented “a streamlined case” “
The streamlined case they wanted to present would have been only the facts that would have Wilson charged with murder.
To be fair, that’s exactly the way most presentations to a grand jury are handled. The prosecutor is under no legal obligation to present evidence that damages his case.
So the protestors are essentially correct that the prosecutor did deviate from “standard procedure” to get the no bill he wanted.
Personally, I believe that was the right thing to do.