Case Against the Reds" , World War I At Home: Readings on American Life, 1914–1920 (NY: John Wiley and Sons), 185–189. Retrieved April 13, 2005. External links Red Scare (1918–1921) Image Database Political history of the United States Anti-anarchism in the United States Anti-communism in the United States 1919 in the United States 1920 in the United States Political and cultural purges Industrial Workers of the World Presidency of Woodrow Wilson Anarchism in the United States Political repression in the United States Revolutions of 1917–1923 Urban warfare Red Scare Mass psychogenic illness in the United States