Langston Hughes
Langston Hughes was a popular poet back in the day. He was blacklisted because his poetry would occasionally appear in communist papers. Sadly, these papers were never given permission to use his poems, but the folks who blacklisted him didn't care about that.
Gypsy Rose Lee
Gypsey Rose Lee was a famous burlesque dancer of the 1950's. She was eventually caught as a recular face as communist meetings. She was arrested and promptly blacklisted from the entertainment world.