Few events in the postwar era have cast such a long shadow over our national life as the assassination of President John F. Kennedy fifty years ago this month. The murder of a handsome and vigorous president shocked the nation to its core and shook the faith of many Americans in their institutions and way of life.

Those who were living at the time would never forget the moving scenes associated with President Kennedy’s death: the Zapruder film depicting the assassination in a frame-by-frame sequence; the courageous widow arriving with the coffin at Andrews Air Force Base still wearing her bloodstained dress; the throng of mourners lined up for blocks outside the Capitol to pay respects to the fallen president; the accused assassin gunned down two days later while in police custody and in full view of a national television audience; the little boy saluting the coffin of his slain father; the somber march to Arlington National Cemetery; the eternal flame affixed to the gravesite. These scenes were repeated endlessly on television at the time and then reproduced in popular magazines and, still later, in documentary films. They came to be viewed as defining events of the era.