In June 1989, Zagorová signed the "Několik vět" (A few sentences) petition, in which Charter 77 demanded the release of political prisoners and freedom of speech. Her activities were blocked by the government and she was not allowed to speak in public until the fall of the communist regime. She resisted pressure to repeal her signature, instead standing her ground with the words "There was nothing [in the petition] with which a decent person would disagree". She sang in public for the first in November 1989, together with Jaroslav Hutka, at Wenceslas Square in Prague.