Emory Douglas worked as the Minister of Culture to the Black Panther Party from1967-1980, when the party officially disbanded.  After being incarcerated as a teenager he worked at the prison printingshop, and later studied graphic design.

Douglas is really an activist artist, and used his silkscreen prints(which are still being made today) to spread knowledge and power to masses of people who otherwise didn’t have a voice.

Here is a link to his newest exhibition, at the MOCA.

http://www.moca.org/emorydouglas/