0 ENCYCLICAL OF POPE PIUS XI ON PERSECUTION OF THE CHURCH IN MEXICO TO OUR VENERABLE BROTHERS OF MEXICO, THE ARCHBISHOPS, BISHOPS, AND ORDINARIES IN PEACE AND COMMUNION WITH THE APOSTOLIC SEE. Health, Venerable Brethren, and the Apostolic Blessing. The concern and sorrow which We feel at the present sad plight of human society at large in no way lessen Our special solicitude for Our beloved sons of the Mexican nation and for you, Venerable Brethren, who are the more deserving of Our paternal regard because you have been so long harassed by grievous persecutions.
Source: Acerba Animi (Vatican.va)