Called "one of the labor movement's key strategists"[2] by Harold Meyerson and "an organizer's organizer" by American Federation of State County and Municipal Employees (AFSCME) President Lee Saunders,[3] he began his work in labor movement in 1966 as research director for the United Packinghouse Workers of America.
[7] He was one of the chief organizers of the April 1965 March on Washington to End the War in Vietnam as part of SDS's Peace Research and Education Project which he co-led with Todd Gitlin.
[8] In 1971, Booth co-chaired the Citizens Action Program (CAP), a group which first investigated air pollution but soon switched to exposing fraudulent underassessment of property values for tax evasion purposes.
CAP's investigations found that U.S. Steel had evaded billions of dollars in taxes through low assessment of its properties.
[1][7] He retired from his position of executive assistant to AFSCME's President Saunders in 2017 and continued to write about political strategy for the 2018 election.