A 1950, an katse karatunsa lokacin da aka kore shi da marubucin Jan Trefulka daga Jam'iyyar Kwaminis saboda "ayyukan adawa da jam'iyyar". Trefulka ya bayyana abin da ya faru a cikin littafinsa mai suna "Pršelo jim štěstí" ("Farin Ciki Ya Sauke Su", 1962). Kundera kuma ya yi amfani da korar a matsayin wahayi ga babban jigon littafinsa "Žert" ("Joke", 1967). Bayan Kundera ya kammala karatunsa a shekarar 1952, Kwalejin Fim ta nada shi a matsayin mai koyar da adabin duniya. A cikin 1956 an sake shigar da Kundera cikin Jam'iyyar amma an sake korarsa a karo na biyu a cikin 1970. Tare da sauran marubutan kwaminisanci masu gyara kamar Pavel Kohout, ya kasance yana da hannu a cikin Prague Spring na 1968. Wannan ɗan gajeren lokaci na ayyukan gyare-gyare ya murƙushe ta
Soviet mamaye Czechoslovakia a watan Agusta 1968. Kundera ya ci gaba da sadaukar da kai ga sake fasalin kwaminisancin Czechoslovak, kuma ya yi muhawara sosai a cikin bugawa tare da ɗan'uwansa marubucin Czech Václav Havel, yana cewa, a zahiri, kowa ya kamata ya natsu kuma cewa "ba a kulle kowa saboda ra'ayinsa ba tukuna", kuma "mahimmancin Prague Autumn na iya zama mafi girma fiye da na Prague Spring". A ƙarshe, duk da haka, Kundera ya yi watsi da mafarkinsa na gyara kuma ya koma Faransa a shekara ta 1975. Ya koyar na 'yan shekaru a Jami'ar Rennes. An cire shi daga zama ɗan ƙasa na Czechoslovak a cikin 1979; ya kasance ɗan ƙasar Faransa tun 1981.