Also in 2004, Cagan was included in Out magazine's annual list of the 100 most influential LGBT people.
Former co-chair of United For Peace and Justice.
Former coordinator of the U.S. Peace Council.
Co-founder of the Committees of Correspondence, a splinter group of the Communist Party USA.
Member of the Communist Left since the 1960s.
Co-founder of Iraq Occupation Watch.
Supporter of the Free Gaza Movement.
On June 12, 1982, Cagan was a lead organizer of a massive anti-nuclear rally held in New York City's Central Park, attended by hundreds of thousands of activists. In 1987 she co-chaired one of the largest-ever rallies for gay and lesbian rights.
In 2009 Cagan served on the advisory committee of the Independent Progressive Politics Network. That same year, she was a member of the Committee to Celebrate the Life of Luis Miranda Rivas, a strong supporter of Fidel Castro's Cuban Revolution.