NYPD officer wearing arm band "Blue Lives Matter is a counter movement in response to Black Lives Matter in the United States.
It was started after the killings of NYPD officers Rafael Ramos and Wenjian Liu in Brooklyn, New York, on December 20, 2014, after they were ambushed in their patrol car. Blue Lives Matter was formed in reaction to the Black Lives Matter movement, which seeks to end police brutality against the African American community".