There were conscientious objectors and war tax resisters in both World War I and World War II. The United States government allowed sincere objectors to serve in noncombatant military roles. However, those draft resisters who refused any cooperation with the war effort often spent much of each war in federal prisons. During World War II, pacifist leaders like Dorothy Day and Ammon Hennacy of the Catholic Worker Movement urged young Americans not to enlist in military service. Since World War II, the peace movement has become widespread throughout the world, and its previously radical doctrines are now a part of mainstream political discourse. Peace movements emerged in Japan and in 1954 they converged to form a unified "Japanese Council Against Atomic and Hydrogen Bombs". Japanese opposition to the Pacific nuclear weapons tests was widespread, and "an estimated 35 million signatures were collected on petitions calling for bans on nuclear weapons". In the United Kingdom, the Campaign for Nuclear Disarmament held an inaugural public meeting at Central Hall, Westminster, on 17 February 1958, attended by five thousand people. After the meeting a few hundred left to demonstrate at Downing Street. CND's declared policies were the unconditional renunciation of the use, production of or dependence upon nuclear weapons by Britain and the bringing about of a general disarmament convention. In the meantime, Britain should halt the flight of planes armed with nuclear weapons, end nuclear testing, not proceed with missile bases and not provide nuclear weapons to any other country. The first Aldermaston March was organised by the CND and took place at Easter 1958, when several thousand people marched for four days from Trafalgar Square, London, to the Atomic Weapons Research Establishment close to Aldermaston in Berkshire, England, to demonstrate their opposition to nuclear weapons. The Aldermaston marches continued into the late 1960s when tens of thousands of people took part in the four-day marches. The formation of CND tapped widespread popular fear and opposition to nuclear weapons following the development of the first hydrogen bomb, and in the late 1950s and early 1960s anti-nuclear marches attracted large followings, especially to the annual Aldermaston march at Easter. Popular opposition to nuclear weapons produced a Labour Party resolution for unilateral nuclear disarmament at the 1960 Party Conference, but it was overturned the following year and did not appear on later agendas. This experience disillusioned many anti-nuclear protesters with the Labour Party, in whom they had previously put their hopes. Subsequently, there was a strong anti-parliamentary current in the British peace movement, and it has been argued that during the 1960s anarchism became as influential as socialism.