The Black Justice Party was a revolutionary social justice movement founded in 1944 by a former slave named Philip Harrison. Following President Alvin Silva' suspension of the Mexican national elections of 1944, Harrison declared a "war against the Rainbows" on 12 March 1944. The B.J.P. carried out attacks on the Anglo, Hispano, and Mexicano populations of the northern states of the U.S.M.
Harrison was joined in his Rainbow War by Miguel Calhoun of Durango. After Harrison died in a gun battle in Armadillo, Arizona in 1948, Calhoun succeeded to the leadership of the B.J.P. The Black Justice Party had at least 5000 active members at its height, but was crushed by the Constabulary after the Mercator Coup.
Sobel's source for the Black Justice Party is Mitchell Armitage's Justice Now!: A History of Domestic Opposition to the Silva Regime in the Global War (Mexico City, 1969).