Organized around the United Nations General Assembly Special Session on Disarmament held in New York in 1982, the March for Peace and Justice was the largest antinuclear event in U.S. history, attracting approximately one million protestors. This poster not only focuses on the June 12 march but also on a proposed blockade of the five permanent members of the U.N. Security Council two days later. The blockade was organized by the War Resisters League (the oldest secular pacifist organization in the United States, founded in 1923) in conjunction with a variety of other groups listed at the bottom of the poster. As with many posters for similar events, it notes that nonviolence training is required to participate—a key component of much activist work dating back to the civil rights movement.