Word Origin & History
Gk. Aisopos, semi-legendary 6c. B.C.E. fablist. Aesopic is attested from 1927 in ref. to Soviet literary censorship: it refers to an obscure or ambiguous writing, often allegorical, which disguises dissent. The term (Rus. ezopovskii, 1875) arose under the Tsars and the style was used by Russian communists.
Once they took power the word was applied by them as a charge against their own dissidents.