17 The message denounces the "black ingratitude" of the priests, who are against the party which has been (so the message says) the guarantee of religious liberty throughout all Italy. The clergy, the Bishops, and this Holy See have never failed to acknowledge everything that has been done during all these years for the benefit and advantage of religion; indeed, they have on many occasions expressed their genuine and sincere appreciation. But We and the Bishops and the Clergy and all the faithful - in fact all citizens desirous of peace and order - have worried and suffered and are worrying and suffering in the presence of the systematic campaign all too quickly begun against the most reasonable and precious liberties of religion and of consciences such as were the attacks on Catholic Action, and its different associations, especially those of the young. These attacks had their culmination in the police measures taken against the organizations, and in the manner to which We have already alluded. They were attacks and measures such as to lead one seriously to doubt whether the former benevolences and favours were indeed actuated by a sincere love and zeal for religion, or whether they were not rather due to pure calculation and to an ultimate goal of domination. And if the question of ingratitude is to be considered, it should be rather the ingratitude now shown towards the Holy See by a party and by a regime which, in the opinion of the whole world, from the fact of establishing friendly relations with the Holy See, both gained a prestige and a credit in the country and outside it, which some people, both in and out of Italy, considered excessive, inasmuch as they deemed the favours on Our part too great, and the trust and confidence which We reposed too full.
Source: Non Abbiamo Bisogno (Vatican.va)