President John F. Kennedy was assassinated in Dallas, Texas, on November 22, 1963. His assassination occurred while he was traveling in a motorcade during a visit to Texas. The event shocked the nation and the world, leading to numerous conspiracy theories and investigations. Lee Harvey Oswald was arrested for the assassination but was killed two days later by nightclub owner Jack Ruby. Kennedy's death marked a pivotal moment in American history, resulting in increased political tension and leading to the eventual escalation of U.S. involvement in the Vietnam War.