Which event contributed to the rise of anti-immigrant, anti-socialist, and anti-anarchist feelings in the United States in the years during and just after World War I?

The Russian Revolution of 1917 made many Americans fear that socialist revolution could spread to the United States. Those fears helped intensify hostility toward immigrants, socialists, and anarchists during and after World War I. The Espionage Act targeted wartime dissent, but the revolution especially fueled the broader anti-radical “Red Scare.”

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