A fascinating time capsule-shot in 1968, released in 1970–this is a filmed performance by three angry, talented black poets. Gylan Kain, Felipe Luciano, and David Nelson recite their rhythmic, passionate work to Afro-Cuban percussion (with occasional flute and guitar) on a rooftop and other urban ghetto settings, working out a highly politicized poetics that anticipates rap while conveying much of the essence of black-power rhetoric of the late 60s. More than a simple objective rendering of an event, this film is interspersed with cutaways and found footage in a very effective fashion by director Herbert Danska, probably best known for his 1967 jazz feature with Dick Gregory, Sweet Love, Bitter. To be shown on video; the run will extend through August 13. (Facets Multimedia Center, 1517 W. Fullerton, Thursday, August 6, 7:00 and 9:00, 281-4114)