New York City Mayor Bill de Blasio drew heckles and boos along with applause when he addressed graduating police cadets on Monday, two days after thousands of uniformed officers turned their backs on him at a slain policeman's funeral.
Police officers in dress uniform and other mourners joined a somber, four-block line outside a New York City church on Friday for the wake of one of two officers shot by a man who said he was avenging the killing of unarmed black men by police.
U.S. law enforcement agencies are a long way from being able to effectively track threats of the kind a gunman posted on Instagram before his execution-style murder of two New York City policemen last weekend.
Two more men have been arrested for threatening New York police, including one who called the precinct headquarters of two officers killed as they sat in their patrol car and asked to speak to one of them, a police spokesman said on Thursday.
