On Friday, November 22, 1963, John F. Kennedy, the 35th president of the United States, was assassinated while riding in a presidential motorcade through Dallas, Texas. President John F. Kennedy was assassinated on November 22, 1963, while riding in a motorcade through Dallas during a campaign visit. Shots rang out at 12:30 p.m. as Kennedy’s motorcade turned. On November 22, 1963, Kennedy was assassinated in Dallas. His vice president, Lyndon B. Johnson, assumed the presidency. Lee Harvey Oswald was arrested for the assassination, but Jack Ruby shot and killed him two days later. On November 22, 1963, President John F. Kennedy was assassinated in Dallas. Here's why many doubt the official story of who killed him. The Warren Commission concluded that a disturbed young man, Lee Harvey Oswald, killed President John F. Kennedy, and he acted alone. (Getty) Six decades later, new details are still coming to light in one of the most scrutinised events in American history: the assassination of President John F Kennedy. As Oswald is being transferred from the Dallas city jail to the county jail, nightclub owner Jack Ruby shoots and kills him, an event captured live on TV. Ruby is arrested immediately. Who killed JFK? Conspiracy theories about the JFK assassination still abound. Learn about the JFK theories and who killed John F. Kennedy. But, if not Oswald, who did kill JFK? Some of the prime candidates include Garrison’s top suspects, the eccentric pilot David Ferrie and the New Orleans businessman Clay Shaw. Oswald never stood trial for murder, because, while being transferred after having been taken into custody, he was shot and killed by Jack Ruby, a distraught Dallas nightclub owner.