I'm not going to clown you, because knowledge is important, but he is one of the most influential Black radical voices in African-American history.
From his Maoist and grass-roots focused approach, to the grand plan he cultivated as the founder of the Black Panther Party alongside Bobby Seale (and Eldridge Cleaver, who failed to actually be as radical as he voiced himself to be), he was an absolutely brilliant man.
Intercommunalism (1974) - Viewpoint Magazine
Good read.