The American response to the Russian Revolution in 1917 was characterized by fear and suspicion, driven by concerns about the spread of communism. The Bolshevik Revolution led to the withdrawal of Russia from World War I, which alarmed the U.S. and its allies. The American government saw the revolution as a potential threat to capitalist democracy and braced for ideological conflicts. This prompted increased anti-communist sentiments, leading to policies aimed at containing communism during the post-war period. The Red Scare that followed highlighted the American government’s apprehension regarding internal subversion and significantly influenced public policy and attitudes toward leftist movements in the United States.