<prompt> Bhala okuqhubekayo kwalesi sigaba - UPlyushch waba ophikisana nokuthatha isikhundla esidlangalaleni ezindabeni zezombusazwe ezishisayo zangaleso sikhathi. Ngo-1968 waphikisana nokungaziphathi kahle kwecala likaGalanskovGinzburg ngokuthumela incwadi kuKomsomolskaya Pravda, engazange ishicilelwe. Lapho amabutho aseSoviet ehlasela iCzechoslovakia  <response>: Ngo-1968, uPlyushch wasayina kanye nabanye abaphikisi baseSoviet abangu-16 isimemezelo sokubambisana nenhlangano yentando yeningi eCzechoslovakia. Ngawo lowo nyaka wajoyina i-Initiative Group for the Defense of Human Rights in the USSR, eyathumela incwadi e-UN Human Rights Commission icela ukuba iphenye ukwephulwa kwe-USSR kwelungelo lokuba nezinkolelo ezizimele nokuzisakaza ngezindlela zomthetho. UPlyushch wayengomunye wabayishumi nanhlanu abasayina i-An Appeal to The UN Committee for Human Rights. Ngenxa yokuphikiswa yizimo zakhe zezombusazwe, waxoshwa eSikhungweni Sezokuxhumana ngo-1968, futhi i-KGB yathatha imibhalo yakhe yesandla eminingi futhi yamphenya ngemibuzo izikhathi eziningana. 