Ursula K. Le Guin
In 1975, Le Guin won a Nebula Award for her story "The Diary of the Rose." She did not accept the award. This was a protest against the Science Fiction and Fantasy Writers of America. The SFWA had recently canceled Stanisław Lem's membership in the group. Le Guin believed they kicked Lem out because he criticized American science fiction and chose to live in the Soviet Union, She said she could not take an award for a story about an unfree society from a writers' group that did not protect freedom.