Get On This Day delivered free to your inbox: br br br 1971 – Wasfi al-Tal, Prime Minister of Jordan, is assassinated by the Black September unit of the Palestine Liberation Organization. br br br br br br 1821 – Panama Independence Day: Panama separates from Spain and joins Gran Colombia. br br br br br 1905 – Irish nationalist Arthur Griffith founds Sinn Féin as a political party. br br br br 1943 – Randy Newman, American singer-songwriter and pianist, is born.