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  It had become clear that for South Vietnam to remain stbale, Diem would have to go. On November 1, 1963, a U.S.-supported military coup toppled Diem's regime. Against Kennedy's wishes, Diem was assassinated. A few weeks later, Kennedy, too, fell to an assassin's bullet. The United States presidency -- along with the growing crisis in Vietnam --now belonged to Lyndon B. Johnson.
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  By the end of 1963, 16,000 U.S. military personal were in South Vietnam
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  A 1964 newspaper headline announces the U.S. military's reaction to the Gulf of Tonkin incident.
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  In 1964, the Free Speech Movement gained prominence in some parts of the United States
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  In April of 1965, SDS helped organize a march on Washington D.C., by some 20,000 protestors. By November of that year, a protest rally in Washington drew more than 30,000.
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  By the end of 1965, the U.S. government had sent more than 180,000 Americans to Vietnam.
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  In August of 1967, President Johnson asked for a tax increase to help fund the war and keep inflation in check.
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  By 1967, the number of U.S. troops in Vietnamhad climbed to about 500,000
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  Martin Luther King jr. was assasinated
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  John F. Kennedy was assasinated
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  Richard M. Nixon is elected as president
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  U.S. troops begin to withdrawl from South Vietnam