Although everything I know about this era comes from reading about it, nonetheless One of the Hollywood Ten seems to accurately depict a darker side of our history during the Cold War years when Communism was a threat to our country. (If this was real or a perceived threat is controversial).
However, One of the Hollywood Ten does accurately tell the story of Herber Bieberman and his trials and eventual conviction of being branded a communist by the US Government, and the ramifications this had to not only his life, but also that of his actress wife as well.
Well written and excellently acted, One of the Hollywood Ten is certainly worth watching.