This is the first feature-length documentary to explore the Black Panther Party, its significance to the broader American culture, its cultural and political awakening for black people and the painful lessons wrought when a movement derails. Master documentarian Stanley Nelson goes straight to the source, weaving rare archival footage with the voices of the people who were there: police, FBI informants, journalists, white supporters and detractors, and Black Panthers who remained loyal to the party and those who left it. Featuring Kathleen Cleaver, Jamal Joseph, and dozens of others, the film is a vibrant chronicle of this pivotal movement that gave rise to a new revolutionary culture in America.