The 1973 film "Wattstax," which captures the energy and excitement of a 1972 concert at the L.A. Memorial Coliseum, is spotlighted. The event brought together 100,000 spectators to see turns by Isaac Hayes ("Theme from Shaft"), Rufus Thomas ("Breakdown") and the Staple Singers ("Respect Yourself"). Also on hand are Kim Weston; Jimmy Jones; the Emotions; the Stax Golden 13; the Bar-Kays; Albert King; Little Milton; Carla Thomas; and Luther Ingram. The Rev. Jesse Jackson opens the event; and introduces Hayes. Intercut throughout are observations by Richard Pryor; and man-on-the-street interviews that offer a snapshot of what life was like for black Americans in the early '70s.