In addition, "grand juries" are notoriously easy for prosecutors influence and get an indictment (basically a go-ahead to proceed to a jury trial). The saying among defense attorneys is that grand juries are so easy to persuade, even a mildy competent prosecutor could get a grand jury to 'indict a ham sandwich'.

So if they weren't able to get it past a grand jury, they either had absolutely no case, screwed something up majorly in presentation, or these camera are extremely and universally unpopular.