Hollywood blacklist

Eugen Berthold Friedrich Brecht (10 February 1898 – 14 August 1956), known professionally as Bertolt Brecht, was a German theatre practitioner, playwright, and poet. Coming of age during the Weimar Republic, he had his first successes as a playwright in Munich and moved to Berlin in 1924, where he wrote The Threepenny Opera with Kurt Weill and began a life-long collaboration with the composer Hanns Eisler. Immersed in Marxist thought during this period, he wrote didactic Lehrstücke and became a leading theoretician of epic theatre (which he later preferred to call "dialectical theatre") and the Verfremdungseffekt.
During the Nazi Germany period, Brecht fled his home country, first to Scandinavia, and during World War II to the United States, where he was surveilled by the FBI. After the war he was subpoenaed by the House Un-American Activities Committee. Returning to East Berlin after the war, he established the theatre company Berliner Ensemble with his wife and long-time collaborator, actress Helene Weigel.

Georgann Johnson (born Georgia Anne Johnson, August 15, 1926 – June 4, 2018) was an American stage, film, and television actress. She was also known as Georgiann Johnson and Georgianne Johnson.

Mary Louise Comingore (August 24, 1913 – December 30, 1971), known professionally as Dorothy Comingore, was an American film actress. She starred as Susan Alexander Kane in Citizen Kane (1941), the critically acclaimed debut film of Orson Welles. In earlier films she was credited as Linda Winters, and she had appeared on the stage as Kay Winters. Her career ended when she was caught in the Hollywood blacklist. She declined to answer questions when she was called before the House Un-American Activities Committee in 1952.

Margo (born María Marguerita Guadalupe Teresa Estela Bolado Castilla y O'Donnell, May 10, 1917 – July 17, 1985) was a Mexican actress and dancer. She appeared in many film, stage, and television productions, including Lost Horizon (1937), The Leopard Man (1943), Viva Zapata! (1952), and I'll Cry Tomorrow (1955). She married actor Eddie Albert in 1945 and was later known as Margo Albert.

Samuel Lawrence Klusman Parks (December 13, 1914 – April 13, 1975) was an American stage and film actor. His career arced from bit player and supporting roles to top billing, before it virtually ended when he admitted to having been a member of a Communist Party cell, which led to his blacklisting by all Hollywood studios. His best known role was Al Jolson, whom he portrayed in two films: The Jolson Story (1946) and Jolson Sings Again (1949).