blasio promises a full airing of the facts by both the nypd and the federal government. >> this has to stop. >> the law requires that whatever goes on before a grand jury remain secret. the district attorney here says he will issue no statements unless a court orders him to. joe johns, cnn staten island, new york. >> new york mayor bill de blasio says he takes the relationship between police officer and the black community there very personally. of course, because his son is black. it's something that he and his wife have always worried about. listen to what he had to say. >> we' had to talk to dante for years about the dangers that he may face. good young man, law abiding young man. never would think to do anything