JFK's orchestration of the attempted overthrow of a foreign regime -- Fidel Castro's in Cuba -- is usually treated in American history as a one-off disaster from which JFK's presidency later recovered.
At Grant Park Obama reminded us of both Martin Luther King, Jr., and John F. Kennedy. I saw Dr. King's Dream come true on that stage. And Kennedy's vision was apparent in Obama's challenge to us. Kennedy and King never promised us a hand out. They promised us a fair shake.