Black Lives Matter and 'Blue Lives Matter' supporters protest in Brooklyn

Black Lives Matter protesters rallied on the corner of 4th Avenue and 86th Street in the Bay Ridge area of Brooklyn, New York on Sunday (July 12).

Black Lives Matter protesters rallied on the corner of 4th Avenue and 86th Street in the Bay Ridge area of Brooklyn, New York on Sunday (July 12).

"Blue Lives Matter" protesters demonstrating in support of New York City police officers gathered behind a police barricade nearby.

"Blue Lives Matter" is a movement in the United States advocating for police forces.