From 1960, the regime increasingly implemented anti-Catholic policies, including harassment, atheistic propaganda, and measures that made carrying out religious practices more difficult. Gomułka, according to Andrzej Leder, was the last Polish politician who seriously tried to realize an anti-clerical program, a staple leftist undertaking. In 1965, the Conference of Polish Bishops issued the Letter of Reconciliation of the Polish Bishops to the German Bishops. In 1966, the celebrations of the 1,000th anniversary of the Christianization of Poland led by the primate, Cardinal Stefan Wyszyński and other bishops who toured the country, turned into a huge demonstration of the power and popularity of the Catholic Church in Poland. In fierce competition, the state authorities conducted their own national celebrations, stressing the origin of Polish statehood, but the display of the Church hierarchy's command of enormous crowds in a land ruled by the communists must have impressed the Catholic prelates in the Vatican and elsewhere. The state-church dialogue, symbolized by the presence of the few "Znak" independent Catholic deputies in parliament, was rapidly deteriorating.