Complex sentence: The Black Riders Liberation Party is a 21st Century Black Power organization based in the American state of California claiming ideological continuity with the Black Panther Party for Self-Defense, a group active from 1966 to 1982.
Split into simpler sentences: The Black Riders Liberation Party is a 21st Century Black Power organization based in the American state of California. The group claims ideological continuity with the Black Panther Party for Self-Defense, a group active from 1966 to 1982.