Jon Cohn’s assessment of the grand jury’s refusal to indict Darren Wilson is very useful. It’s hard to imagine a prosecutor essentially tanking his case for the grand jury in another type of killing, and this also explains why McCulloch sounded more like a defense attorney than a prosecutor at a press conference.
This would be a good time to read Radley Balko on Ferguson if you haven’t already.
But the goal of criminal law is to be fair—to treat similarly situated people similarly—as well as to reach just results. McCulloch gave Wilson’s case special treatment. He turned it over to the grand jury, a rarity itself, and then used the investigation as a document dump, an approach that is virtually without precedent in the law of Missouri or anywhere else. Buried underneath every scrap of evidence McCulloch could find, the grand jury threw up its hands and said that a crime could not be proved. This is the opposite of the customary ham-sandwich approach, in which the jurors are explicitly steered to the prosecutor’s preferred conclusion. Some might suggest that all cases should be treated the way McCulloch handled Wilson before the grand jury, with a full-fledged mini-trial of all the incriminating and exculpatory evidence presented at this preliminary stage. Of course, the cost of such an approach, in both time and money, would be prohibitive, and there is no guarantee that the ultimate resolutions of most cases would be any more just. In any event, reserving this kind of special treatment for white police officers charged with killing black suspects cannot be an appropriate resolution.