Jasienica was, however, very outspoken in his criticism of the censorship in the People's Republic of Poland. On 29 February 1968 during a ZLP meeting, Jasienia presented a harsh critique of the government. These acts, and in particular his signing of the dissident Letter of 34 in 1964 against censorship and his involvement in the 1968 protests led to his being labeled a political dissident, for which he suffered government persecution. Partly as a response to government's persecution of Jasienica, in 1968 the satirist Janusz Szpotański dedicated one of his anti-government poems, "Ballada o Łupaszce" (The Ballad of Łupaszko), written while Szpotański was in Mokotów Prison, to the writer. In the aftermath of the 1968 events, Polish communist media, and communist leader, Władysław Gomułka, on 19 March 1968, alleged that in 1948 Jasienica was freed because he collaborated with the communist regime; this allegation caused much controversy and damaged Jasienica's reputation. He was subject to much invigilation (oversight) by the security services. In December 1969, five years after his first wife's death, he remarried. This marriage proved to be highly controversial as it was discovered after his death that his second wife, Zofia Darowska O’Bretenny, had been a secret police informant before their marriage, and continued to write reports about him throughout their marriage. From 1968 until his death, his books were prohibited from being distributed or printed.