The Gangster Disciples are an African American street and prison gang, which was formed in the South Side of Chicago in the late 1960s, by Larry Hoover, leader of the Supreme Gangsters, and David Barksdale, leader of the Black Disciples. The two groups united to form the Black Gangster Disciple Nation (BGDN). The BGDN divided into different factions known today as the Gangster Disciples and Black Disciples. Today, the two gangs are bitter rivals.
Read article on Wikipedia