Joseph McCarthy investigated communism's influence on government and security in the U.S. during the early 1950s, leading to the infamous era of McCarthyism.
Joseph McCarthy focused his investigation into communism's influence on the government and security of American life in the early 1950s. McCarthy's unfounded accusations and tactics, known as McCarthyism, targeted government officials and led to significant fear and repercussions during the Cold War era.
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