On censorship in People's Poland see, "The Black Book of Polish Censorship, " Random House/Vintage, 1984, translated from a '77 Polish samizdat derived from official files. --- Only a madman trusts samizdat.
It's remarkable how many self-proclaimed "dissidents" turned into corrupt pieces of shit after 1991. Yelena Bonner, Sakharov's widow, is less than useless, blathering unintelligently on and on telling her (entirely Western) audience what it wants to hear. Took money from Berezovsky. Talk about rendering yourself thoruoghly irrelevant in contemporary Russia.