a trial would require. Bernardine Dohrn was removed from the FBI's Ten Most Wanted List on 7 December 1973. As with the earlier federal grand juries that subpoenaed Leslie Bacon and Stew Albert in the U.S. Capitol bombing case, these investigations were known as "fishing expeditions", with the evidence gathered through "black bag" jobs including illegal mail openings that involved the FBI and United States Postal Service, burglaries by FBI field offices, and electronic surveillance by the Central Intelligence Agency against the support network, friends, and family members of the Weather Underground as part of Nixon's COINTELPRO apparatus. These grand juries caused Sylvia Jane Brown, Robert Gelbhard, and future members of the Seattle Weather Collective to be subpoenaed in Seattle and Portland for the investigation of one of the first (and last) captured WUO members. Four months afterwards the cases were dismissed. The decisions in these cases led directly to the subsequent resignation of FBI Director, L. Patrick Gray, and the federal indictments of W. Mark Felt or "Deep Throat" and Edwin Miller and which, earlier, was the factor leading to the removal of federal "most-wanted" status against members of the Weather Underground leadership in 1973. Prairie Fire With the help from Clayton Van Lydegraf, the Weather Underground sought a more Marxist–Leninist ideological approach to the post-Vietnam reality. The leading members of the Weather Underground (Bill Ayers, Bernardine Dohrn, Jeff Jones, and Celia Sojourn) collaborated on ideas and published a manifesto: Prairie Fire: The Politics of Revolutionary Anti-Imperialism. The name came from a quote by Mao Zedong, "a single spark can set a prairie fire." By the summer of 1974, five thousand copies had surfaced in coffee houses, bookstores and public libraries across the U.S. Leftist newspapers praised the manifesto. Abbie Hoffman publicly praised Prairie Fire and believed every American should be given a copy. The manifesto's influence initiated the formation of the Prairie Fire Organizing Committee in several American cities. Hundreds of above-ground activists helped further the new political vision of the Weather Underground. Essentially, after the 1969 failure of the Days of Rage to involve thousands of youth in massive street fighting, Weather renounced most of the Left and decided to operate as an isolated underground group. Prairie Fire urged people to never "dissociate mass struggle from revolutionary violence". To do so, asserted Weather, was to do the state's work. Just as in 1969–1970, Weather still refused to