The fear of alien attacks, the need to violently exclude Others seen as dangerous or polluting has formed a critical component of the United States’ national identity from the Alien and Sedition Acts of the 1790s through Joseph McCarthy’s war on domestic Communists to the present. To fear and dehumanize alien Others, to ruthlessly hunt them down, is truly American. Continue Reading Excerpt: This Voilent Empire, by Carroll Smith-Rosenberg