The Campaign for Nuclear Disarmament's first Aldermaston March, protesting against the Atomic Weapons Establishment (AWE), began in the square in 1958. One of the first significant demonstrations of the modern era was held in the square on 1961 by the Committee of 100, which included the philosopher Bertrand Russell. The protesters rallied for peace and against war and nuclear weapons. In March 1968, a crowd of 10,000 demonstrated against US involvement in the Vietnam War before marching to the American Embassy in Grosvenor Square.