1914: Archduke Franz Ferdinand, his wife, and his moustache are shot and killed while travelling to market in an open buggy, triggering World War I.
1942: Promptly Shoot Everyone Day receives a tremendous boost with the opening of the Treblinka Concentration Camp. Up to 6 million take part
1963: Lee Harvey Oswald(pictured) is assassinated in the Texas Book Depository in Dallas. His alleged assassin is promptly shot, creating a firestorm of controversy and insane conspiracy theories printed on poorly xeroxed fliers.
1965: Malcolm X gives a speech in New York City, decrying the racist motivations behind Promptly Shoot Everyone Day. He is promptly shot and replaced by Malcolm XI.
1973: Bob Marley promptly shoots the sheriff, but he swears he didn't shoot the deputy, or at least he did not shoot the deputy in a prompt and timely manner.
1986: Britain's Prince Andrew marries Sarah Ferguson at Westminster Abbey in London. He then promptly shoots her in the face.