The Black Mafia was one of the bloodiest crime syndicates in modern US history. From its roots in Philadelphia's ghettos in the 1960's, it grew from a rabble of street toughs to a disciplined, ruthless organization based on fear and intimidation with links across the Eastern Seaboard. Known in its "legitimate" guise as "Black Brothers, Inc.," it held regular meetings, appointed investigators, treasurers and enforcers, and controlled drug dealing, loan-sharking, numbers rackets, armed robbery and extortion.

Its ferocious crews of gunmen grew around burly founder Sam Christian, the most feared man on Philly's streets. They developed close ties with the influential Nation of Islam and soon were executing rivals, extorting bookies connected to the city's powerful Cosa Nostra crew, and cowing local gangs. The Black Mafia was responsible for over forty killings, the most chilling being the 1973 massacre of two adults and five children in Washington, D.C. Despite the arrests that followed, they continued their rampage, exploiting their ties to prominent lawyers and civil rights leaders. A heavy round of convictions and sentences in the 1980's shattered their strength only for the crack-dealing Junior Black Mafia to emerge in theirwake.