JFK assassination: 50 years on

Former US president John F. Kennedy and first lady Jacqueline Kennedy descend the stairs from Air Force One after arriving at Love Field in Dallas,Texas, on November 22nd, 1963. This Friday, November 22nd, 2013, will mark the 50th anniversary of the assassination of President Kennedy. Photograph: Cecil Stoughton/The White House/John F. Kennedy Presidential Library/Reuters