Two ways the threat of communism affected U. S. citizens

The fear of Communism infiltration in the U. S. government, entertainment industry and other organizations affected American politics, culture, and even daily life, particularly in the early years of the Cold War.

Explanation:

Communism in America began as a state ideology which emerged in Russia following the Bolshevik Revolution in 1918. Led by Vladimir Lenin, this populist uprising toppled the regime of Czar Nicholas II.