These fears were inflamed by the 1919 United States anarchist bombings , which were conducted by the anarchist Luigi Galleani and his followers .
Following the October Revolution in the Russian Empire , many in America feared the possibility of a Communist - inspired revolution in the United States .
These fears were inflamed by the 1919 America   anarchist bombings , which were conducted by the anarchist Luigi Galleani and his followers .
Following the October Revolution in the Russian Empire , many in America feared the possibility of a Communist - inspired revolution in the United States .