103 Instead of dialogue, therefore, there is silence, for example, the only voice that is heard is the voice of suffering. By its suffering it becomes the mouthpiece of an oppressed and degraded society, deprived by its rulers of every spiritual right. How can a dialogue be conducted in such circumstances as these, even if we embarked upon it? It would be but "a voice crying in the wilderness." (63) The only witness that the Church can give is that of silence, suffering, patience, and unfailing love, and this is a voice that not even death can silence.
Source: Ecclesiam Suam (Vatican.va)