57 We are well aware that this harsh and severe treatment is speciously attributed to political reasons. But this is no new procedure used today for the first time; very often in the course of the centuries the enemies of the Church have hesitated to make public profession of their opposition to the Catholic faith and to attack it openly; they brought cunning and subtle allegations that Catholics were plotting against the State. In the very same way the Jews accused the Divine Redeemer himself before the Roman governor, saying "We have discovered that this man is subverting the loyalty of our people, forbids the payment of tribute to Caesar." But faces and events themselves plainly manifest, and show in its true light, what was and is the real cause of this savagery. For, as is well known, the patriarch Alexis, recently elected by the dissident bishops of Russia, openly exalts and preaches defection from the Catholic Church in a letter lately addressed to the Ruthenian Church, a letter which contributed not a little to the initiation of this persecution.
Source: Orientales Omnes Ecclesias (Vatican.va)