A committee of the U.S. House of Representatives, investigated allegations of communist activity in the U.S. during the early years of the Cold War (1945-91). Established in 1938, the committee used its power as weapon and called citizens to testify in high-profile hearings before Congress. This intimidating atmosphere often produced dramatic but questionable revelations about Communists infiltrating American institutions. HUAC’s controversial tactics contributed to the fear, distrust and repression of the Red Scare.