Show Trial: Hollywood, HUAC, and the Birth of the BlacklistIn 1947, the Cold War came to Hollywood. Over nine tumultuous days in October, the House Un American Activities Committee held a notorious round of hearings into alleged Communist subversion in the movie industry. The blowback was profound: the major studios pledged to never again employ a known Communist or unrepentant fellow traveler. The declaration marked the onset of the blacklist era, a time when political allegiances, real or suspected,