Members of Black Lives Matter DMV participate in the annual Martin Luther King Holiday Peace Walk and Parade on January 18, (Alex Wong, Getty Images)Bobby Seale, chairman of the Black Panther Party, addresses a rally outside the party headquarters on Aug. 13, 1971, in Oakland, Calif. (AP)
Mica Grimm, with Black Lives Matter Minneapolis, listens as NAACP youth director Stephen Green speaks at a makeshift memorial for Jamar Clark. (Aaron Lavinsky, Star Tribune via AP)Detroit policemen search some of the 15 members of a Black Panther party splinter group after a nine-hour armed standoff in Detroit on Oct. 25, 1970. (Richard Sheinwald, AP)
Black Lives Matter protesters who marched from City Hall to Elsie in Minn., demand answers in the death of Jamar Clark. (Richard Tsong-Taatarii, Star Tribune via AP)Detroit Police frisk some Black Panther party members as they surrender after a nine-hour armed standoff on Oct. 25, 1970. (Richarf Sheinwald, AP)