In May 2010 , some 25,000 people , including members of peace organizations and 1945 atomic bomb survivors , marched for about two kilometers from downtown New York to a square in front of United Nations headquarters , calling for the end to nuclear weapons . In May 2010 , some 25,000 people , including members of peace organizations and 1945 atomic bomb survivors , marched for about two kilometers from downtown New York to a square in front of United Nations headquarters , calling for the elimination of nuclear weapons .