The revolutionary art of Emory Douglas, Black Panther

March 9 1969: 'All Power to the People' was a slogan often used by the party Photograph: Emory Douglas /PR

May 6 1972: Douglas originally helped with the layout of the Black Panthers' newspaper, and realised that art could enhance their campaigns and reach the masses Photograph: PR

August 8 1970: Bobby Seale and Huey P Newton founded and led the BPP. They drew on the metaphor of the panther as an animal that defends itself to death Photograph: Emory Douglas /PR

December 20 1967: Douglas is credited with popularising the term 'pigs' for corrupt police officers Photograph: Emory Douglas /PR

October 26 1968: Douglas's cartoons were often highly critical of the political system Photograph: Emory Douglas /PR

June 2 1973: 'Nobody liked Nixon,' Douglas recalls, in reference to this work associating him with Hitler Photograph: Emory Douglas /PR

September 21, 1974: Illustrating how corporate interests controlled the president Photograph: ARS NY-DACS/PR

September 27 1969: This work references the aftermath of the Chicago riots of 1968, in which it became apparent that mayor Richard Daley was involved in the suppression of progressive organisations Photograph: Emory Douglas /PR

April 17 1976: Cointelpro was a series of covert FBI operations against the Panthers; the faces represent those killed Photograph: Emory Douglas /PR

1969: The Black Panthers promoted gender equality, and many women were members of the movement Photograph: Emory Douglas /PR