To add to Brian's excellent comments, back in the 80's, Christopher Street, then a great gay monthly, published a piece on the PRC and gay men. During the Great Proletarian Cultural Revolution, gay men were thrown off bridges in Shanghai.
On Cuba see, "Gays Under the Cuban Revolution, " by New Left journalist, Allen Young. Young has de-radicalized is my impression. This pamphlet was responded to by lesbian feminist film critic, B. Ruby Rich in, "Signs, " the academic feminist journal. Back around '70, Lee Lockwood, interviewed Fidel for a book, http://www.google.com/search?q=Lockwood+Fidel+homosexuality SWP (?) http://www.cubasolidarity.com/Arenas1.htm denunciation of Reinaldo Arenas. In college I read his novel, "Farewell to the Sea. " Great read, w/ Celineesque style.
The documentary, "Improper Conduct, " on Cuban repression of leftists (Cuban Popular Socialist Party i.e. the Batista era CP that Fidel merged into his July 26th movement to create the Cuban CP) and gays, has much material of note. Fidel, brother Raul, is reputed to be gay. And, Alarcon, the Cuban Assembly Speaker, who after John Lennon died, authored a obit./tribute, how does he square that with Beatles fans in the 60's, being imprisoned?
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Michael Pugliese