The ceremony for officer Rafael Ramos comes nearly a week after he and partner Wenjian Liu were shot and killed in their patrol car by 28-year-old Ismaaiyl Brinsley.
New York Police Commissioner Bill Bratton says tensions in the city are at their worst since the 1970s. He spoke two days after Ismaaiyl Brinsley shot and killed two police officers in New York.
NFL and NBA players are famous and influential, says commentator Frank Deford. So if they want to show support for protests against police brutality, he asks, why shouldn't they?