 Complete the following phrase:  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 