Red Scare: This term refers to the widespread fear of communism that gripped America during the Cold War era. It led to heightened suspicion, paranoia, and aggressive measures taken against suspected communists or communist sympathizers.
Loyalty Oaths: These were pledges required by certain institutions (such as government agencies or universities) for individuals to affirm their loyalty to the United States and disavow any affiliation with communism.
HUAC (House Un-American Activities Committee): The HUAC was a congressional committee established in 1938 that played a significant role in investigating alleged communist activities in various sectors of society. It gained prominence during the height of McCarthyism and conducted highly controversial investigations into Hollywood actors, writers, and directors for suspected communist ties.