The assassination of President John F. Kennedy on November 22, 1963, was significant for numerous reasons. It shocked the nation and the world, leading to an outpouring of grief and heightened political tensions during the Cold War. His death disrupted a wave of progressive reforms he was championing, including civil rights initiatives and efforts in education and healthcare. Kennedy’s assassination also spurred conspiracy theories and investigations about his death, changing the way political violence was viewed in the U.S. It reinforced the importance of security in political leadership.