Plot: Guests include: Nikki Giovanni, The Sweet Inspirations, The Black Dance Union, Leon Thomas, The Staple Singers, The Three Degrees, Esther Phillips, Andrew Hill, Thelma Houston, Billy Paul, Junior Walker, Clayton Riley, Buddy Miles, Odetta, Betty Carter, Valerie Simpson, Nick Ashford, Roy Haynes, Betty Shabazz, The Reverend Louis Farrakhan, Rufus Thomas, Richie Havens, Herbie Hancock, Mandrill, Max Roach, Hugh Masekela, Ron Carter/M'Boom, Wilson Pickett, Melvin Van Peebles, James Baldwin, Bill Withers, and others.