It has now been more than forty years since President John F. Kennedy was assassinated on the streets of Dallas on November 22, 1963. No event in the post-war era-- not even the terrorist attacks of September 11, 2001, has cast such a long shadow over our national life. The murder of the handsome and vigorous president shocked the nation to its core, and shook the faith of many Americans in their institutions and way of life. The repercussions from that event continue to be felt down to the present day. Looking back, it is now clear that Kennedy's death marked a historical crossroads after which point events began to move in surprising and destructive directions.