September 11, 2001 marked a pivotal moment for many people in the United States. It was also a vital moment for U.S. policy. The U.S. government changed its foreign policy, leading wars in Afghanistan and Iraq that it claimed were necessary to fight terrorism. Changes also took place at home. September 11 created a climate of fear, uncertainty, and religious and racial tensions. The U.S. government passed laws and developed programs that it argued were necessary to protect security but that critics argued violated the Constitution. Today, with the persistence of extremist Muslim terrorism and right-wing terror, concerns about terrorism persist and raise important questions about how to respond. What is the best way to respond to terrorism? How great is the threat? What must be done overseas? What should be done in the United States? Responding to Terrorism: Challenges for Democracy helps students consider these important issues and prepares them to advocate for different options for U.S. policy in a simulation set in the U.S. Senate.