How did the second red scare affect US domestic policy?

The Second Red Scare, which peaked in the late 1940s and early 1950s, significantly influenced U.S. domestic policy by fostering a climate of fear and suspicion regarding communism. This led to the implementation of policies aimed at rooting out perceived communist influences, such as loyalty oaths for government employees and the establishment of the House Un-American Activities Committee (HUAC) to investigate alleged subversive activities. Additionally, the scare fueled anti-communist sentiment, resulting in the rise of McCarthyism, where Senator Joseph McCarthy's aggressive tactics targeted countless individuals in government, entertainment, and other sectors, often without substantial evidence. Ultimately, these developments contributed to a culture of conformity and repression, impacting civil liberties and free expression in the U.S.