return their military decorations to the White House in protest of the war, but were turned back. On March 26, anti-war demonstrations were held around the country and the world, with 20,000 taking part in New York City. A Gallup poll shows that 59% believe that sending troops to Vietnam was not a mistake. Among the age group of 21–29, 71% believe it was not a mistake compared to 48% of those over 50. On May 15, another large demonstration, with 10,000 picketers calling for an end to the war, took place outside the White House and the Washington Monument. June – The Gallup poll respondents supporting the U.S. handling of the war slipped to 41%, 37% expressed disapproval, and the rest had no opinion. A crowd of 4,000 demonstrated against the U.S. war in London on July 3 and scuffled with police outside the U.S. embassy. 33 protesters were arrested. Joan Baez and A. J. Muste organized over 3,000 people across the nation in an antiwar tax protest. Participants refused to pay their taxes or did not pay the amount designated for funding the war. Protests, strikes and sit-ins continued at Berkeley and across other campuses throughout the year. Three army privates, known as the "Fort Hood Three", refused to deploy in Vietnam, calling the war "illegal and immoral", and were sentenced to prison terms. Heavyweight boxing champion Muhammad Ali – formerly known as Cassius Clay – declared himself a conscientious objector and refused to go to war. According to a writer for Sports Illustrated, the governor of Illinois, Otto Kerner, Jr., called Ali "disgusting" and the governor of Maine, John H. Reed, said that Ali "should be held in utter contempt by every patriotic American." In 1967 Ali was sentenced to 5 years in prison for draft evasion, but his conviction was later overturned on appeal. In addition, he was stripped of his title and banned from professional boxing for more than three years. In June 1966 American students and others in England meeting at the London School of Economics formed the Stop It Committee. The group was prominent in every major London anti-war demonstration. It remained active until the end of the war in April 1975. 1967 The protest on June 23 in Los Angeles is singularly significant. It was one of the first massive war protests in the United States and the first in Los Angeles.