
Caroline Kennedy speaks about the launch of the JFK Digital Archive, as part of the 50th anniversary of the inauguration of President John F. Kennedy, at the National Archives in Washington, on Thursday, Jan. 13, 2011. (AP Photo/Jacquelyn Martin)

This undated photo provided by the University of Tampa shows a statue of John F. Kennedy in Plant Park on the UT campus in Tampa, Fla. Tampa also has a street named Kennedy Boulevard memorializing the president’s visit to Tampa four days before he was shot in 1963, and many Republicans will travel along the thoroughfare named for the Democrat as they go between their hotels and the site of the Republican National Convention, which begins Aug. 27. (AP Photo/University of Tampa)

Row upon row of white marble monuments at Arlington National Cemetery honor military veterans. More than 400,000 graves line up on its 624 acres, which also hold the Tomb of the Unknowns and the grave of John F. Kennedy. (The Washington Times)

** FILE ** President John F. Kennedy delivers his inaugural address after taking the oath of office at Capitol Hill in Washington, D.C., on Jan. 20, 1961 (AP Photo, File)

John F. Kennedy

John F. Kennedy's radically altered appearance during the president's seven sittings posed a challenge to portrait painter Elaine de Kooning, who created 23 versions but was most pleased with an abstract expressionist work that captured his kinetic energy. (Photograph provided by the National Portrait Gallery)

This Nov. 20, 1963 photo released by the John F. Kennedy Presidential Library and Museum in Boston, shows President John F. Kennedy, First Lady Jacqueline Kennedy, Chief Justice Earl Warren, Mrs. Warren, and others descending the Grand Staircase during the Judicial Reception at the White House. On Jan. 24, 2012, the Kennedy Llibrary released the final 45 hours of White House recordings secretly taped during President Kennedy’s time in office. The last tapes were made Nov. 20, 1963, two days before his assassination in Dallas. (AP Photo/The White House, Cecil Stoughton)

In this Sept. 13, 1963 photo, former New York Times reporter Tom Wicker stands in front of the White House in Washington. Wicker, who covered President John F. Kennedy’s assassination for the Times, went on to serve as the paper's Washington bureau chief and columnist has died at his home in Rochester, Vt. He was 85. (AP Photo/The New York Times, George Tames

Martin Luther King Jr. and John F. Kennedy gave impassioned speeches in a style that seems to be missing in modern politics. (Associated Press)