AP US History
The Early-20th Century Red Scare was a period of intense fear and paranoia regarding the spread of communism and radical leftist ideologies in the United States, particularly after World War I. This era, occurring roughly from 1917 to 1920, was marked by government crackdowns on perceived radicals, labor unrest, and widespread xenophobia as a reaction to the Bolshevik Revolution and the rise of socialist movements.