Laconic: Malcolm Xerox

Militant, left-wing Angry Black Man who blames racism for everything.

-OR-

A character who is willing to resort to extremist violence as means of pushing for civil rights for an oppressed minority. Usually as a Foil to an idealistic and pacifistic character who pushes for the same goal.
Don't tell me to view the unabridged version! You ain't my massuh, whitey!