On May Day, 1975, three filmmakers recorded interviews with Weatherpeople Bernardine Dohrn, Bill Ayers, Kathy Boudin, Jeff Jones and Cathy Wilkerson at a “safe house” near Los Angeles. The film they completed a year later was much more than long sequences of talking heads, intercutting a well-scavenged collection of footage that was not 'archival' so much as it was a compendium of leftist documentaries from that moment in history. With excerpts from works by Chris Marker, Third World Newsreel, Jane Fonda's Indochina Peace Campaign, and others, Underground now serves as a double-barreled time capsule. We see deep into the interior of the Weather Underground and broadly sample the texture of documentaries of dissent.