The post-9/11 fear of terrorism refers to the widespread anxiety and heightened sense of insecurity that developed in the United States after the terrorist attacks on September 11, 2001. It encompasses the fear and concern about potential acts of terrorism and the perceived threat to national security.
Related terms
Patriot Act: Legislation passed shortly after 9/11 that expanded government surveillance powers in order to prevent future acts of terrorism.
Department of Homeland Security: Established as a response to 9/11, this federal agency is responsible for ensuring the safety and security of the United States from various threats, including terrorism.
War on Terror: A military campaign initiated by President George W. Bush in response to 9/11 aimed at combating global terrorist organizations like Al-Qaeda.