John Travolta asked Princess Diana to dance to "Saturday Night Fever" at a White House gala dinner in 1985, and she accepted. In 1963, around 250,000 Americans marched on Washington to protest racism and lack of jobs. Martin Luther King Jr. delivered his famous "I Have a Dream" speech the following day. In 1953, Queen Elizabeth II's coronation procession through London and ceremony at Westminster Abbey were watched by around 3 million spectators, and commemorated with street parties.