In 1918: During World War I, Germany launched the Somme Offensive, hoping to break through the Allied line before American reinforcements could arrive.
In 1963: Alcatraz prison in San Francisco Bay was emptied of its last inmates at the order of Attorney General Robert F. Kennedy.
In 1965: More than 3,000 civil rights demonstrators led by the Rev. Martin Luther King Jr. began their march from Selma to Montgomery, Ala.
In 1972: The Supreme Court ruled that states may not require one-year residency for voting eligibility.
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