What group inspired the red scare of the 1920s?

The Red Scare of the 1920s was primarily inspired by the Bolshevik Revolution in Russia in 1917 and the subsequent rise of communist and socialist movements worldwide. Fears of a similar uprising in the United States were fueled by labor unrest, strikes, and anarchist bombings, leading to widespread paranoia about the threat of communism infiltrating American society. This culminated in government crackdowns on perceived radicals, most notably through the Palmer Raids, which targeted political dissidents and immigrants.