June 1968: Richard Nixon is killed in Chicago when a bomb explodes near him, it was discovered Bill Ayers, an anti-war left wing militant was responsible. Ayers was arrested by the FBI trying to flee to Canada and sentenced to life in prison. Nixon’s death occurred within weeks of Robert Kennedy’s. 20 July 1968: Beatle Paul McCartney and longtime girlfriend actress Jane Asher shock the world when they announce their marriage. It had been speculated in the press the couple was close to breaking up. 20 January 1969: Hubert Humphrey succeeds Lyndon Johnson as the 37th US President.