The acquittal of Officer Caesar Goodson on all counts in the death of Freddie Gray should prompt State's Attorney Marilyn Mosby to re-evaluate whether or how to pursue the cases against the four remaining officers charged in the case. Officer Goodson, as the driver of the van in which Gray was injured, was most responsible for his safety. If prosecutors' evidence isn't strong enough to prove he was criminally responsible, it's hard to see how they could convict the others, particularly on charges of manslaughter and assault. Moreover, Ms. Mosby needs to ask whether her deputies' courtroom tactics threaten to do irreparable harm to the crucial relationship between police and prosecutors. Things got ugly during the Goodson trial in a way that didn't serve the public's interest.