 The shooting at Trump's rally is sending shockwaves across the globe and is bringing back memories of the last time an American president was shot. They're looking at video of Ronald Reagan, president, 1981, shot outside the Washington Hilton Hotel after he gave a speech by John Hinckley. And, of course, the previous assassinations, 1968, Robert F. Kennedy, just after he won the California Democratic primary, and the assassination attempt of George Wallace, 1972.