What role did I Edgar Hoover play in the second red scare?

J. Edgar Hoover, as the Director of the FBI, played a pivotal role in the Second Red Scare by aggressively promoting anti-communist sentiments and conducting widespread surveillance on suspected communists and leftist organizations. He spearheaded efforts to investigate and undermine perceived threats to national security, including the use of tactics such as wiretapping and infiltration. Hoover's actions contributed to a climate of fear and paranoia, exemplified by the rise of McCarthyism, which targeted alleged communists in various sectors of American society. His influence helped shape public perceptions of communism as a significant threat during the late 1940s and 1950s.