bring the case before a grand jury, leaving to jurors the decision of what charges might be brought, if any. His spokesman acknowledged that it was unusual that the prosecutor was not asking the grand jury to endorse a specific charge. It was also unusual to present a case to a grand jury before the police investigation was over. Cornell Brooks, the president of the National Association for the Advancement of Colored People (NAACP), called for a special prosecutor to replace McCulloch in the case, saying that was needed to restore credibility with Ferguson's black community. On , McCulloch reported in a press conference that the grand jury reached a decision in the case and elected "not to indict Wilson". Immediately after the announcement, McCulloch said that he appointed prosecutors in his office to handle the case, rather than himself, because "he was 'fully aware of unfounded but growing concern that the investigation might not be fair.'" In his 23 years on the job, this was the fifth time McCulloch presented evidence to a grand jury in a shooting by police; in each case, the grand jury came back without an indictment. Post-case analysis Following the grand jury result, criticism was directed at McCulloch over the handling, result, and other aspects of the grand jury process, while other analysts defended his handling of the matter. Former Supreme Court clerk Eric Citron wrote on SCOTUSblog, that the grand jury investigation was atypical. Citron argues that, based on case law – a question raised in United States v. Williams – prosecutors can withhold "substantial exculpatory evidence" in order to obtain an indictment, as the role of the grand jury is not to determine guilt, but rather to decide whether there is enough evidence of a crime; exculpatory evidence can be presented at trial. Citron presented the dissent from Justice Stevens, who said that the prosecutor need not "ferret out and present all evidence that could be used at trial to create a reasonable doubt as to defendant's guilt." Citron then asserts that when a prosecutor wants an indictment, a grand jury process like what happened in Wilson's case would not be expected. Other legal experts asserted that McCulloch deflected responsibility for failing to indict Wilson, and created conditions in which the grand jury would not indict him either. Ronald S. Sullivan Jr., director of the Harvard Criminal Justice Institute at Harvard University,