Guess you never heard of the Strugatsky brothers or Bulgakov? (The Master and the Margarita)
Their careers are interesting. Bulgakov survived only because Stalin liked some of his works and protected him. From Wikipedia:
"In 1939, Mikhail Bulgakov organized a private reading of
The Master and Margarita to his close circle of friends. Yelena Bulgakova remembered 30 years later, "When he finally finished reading that night, he said: 'Well, tomorrow I am taking the novel to the publisher!' and everyone was silent", "...Everyone sat paralyzed. Everything scared them. P. (P. A. Markov, in charge of the literature division of MAT) later at the door fearfully tried to explain to me that trying to publish the novel would cause terrible things", she wrote in her diary (14 May 1939)."
And on the Strugatsky brothers:
"Several of the Strugatsky brothers' books take place in the World of Noon, also known unofficially as the Wanderers Universe. The name is derived from the title of one of their texts, Noon: 22nd Century.
The main characteristics of the Noon Universe are: a very high level of social, scientific, and technological development; creativity of the general population; and the very significant level of societal maturity compared to the modern world. For instance, this world knows no monetary stimulation (indeed, money does not exist), and every person is engaged in a profession that interests him or her. The Earth of the Noon Universe is governed by a global meritocratic council composed of the world's leading scientists and philosophers. That Noon World has been clearly named as "World of Communism" in their novels, which was handy for publishing their novels in the USSR, where the Communist Party decided whether a book would be printed and approved for mass circulation."
The Master and the Margarita is said to be very good (I haven't read it) and is apparently critical of the Soviet literary establishment. It was published only decades after Bulgakov's death, in 1966. The 1966 Soviet edition was heavily censored, with 12% removed and much else changed. The complete MS was published only outside the Soviet Union. So I rest my case.