For more than 40 years, Leslie has worked in a wide range peace and social justice movements locally and nationally: from the Vietnam war to racism at home, from nuclear disarmament to lesbian/gay liberation, from fighting sexism to working against U.S. military intervention.
Her coalition-building and organizing skills have mobilized hundreds of thousands of people in many of the nation's largest demonstrations and countless other public events and activities including: the million person June 12, 1982 Nuclear Disarmament demonstration in NYC; the historic lesbian/gay rights march on Washington on October, 1987; the march on Washington against the Gulf War in January, 1991; and the largest mobilizations against the war in Iraq (Feb 15 and March 22, 2003; August 29, 2004; Sept. 24, 2005 and Jan. 27, 2007). She has taught these organizing skills at the Z Media Institute.
Since the early 1990's, Leslie's major organizing projects have included: work against Operation Desert Storm and the first War against Iraq, normalization of U.S./Cuba relations, the commemoration of the 25th anniversary of the Stonewall rebellion, work in New York City against police brutality and for budget equity, and serving in the leadership of United for Peace and Justice.
Leslie has worked on several progressive electoral campaigns, including serving as the Field Director in the 1988 Dinkins Mayoral race in NYC. Her writings appear in 8 anthologies, and in scores of journals, newspapers and on-line outlets. She played a major role in winning back the nation's first listener-sponsored media network and was chair of the Interim Pacifica Radio National Board. Since 2002, Leslie has been the National Coordinator of United for Peace and Justice, the nation's largest antiwar coalition with more than 1,400 local and national organizations.