"On the Service of Charity"
During the Mexican-American War (1846-1848), a group of Catholic immigrants - mostly Irish - switched sides and went to battle for Mexico! Long before Masses began to be celebrated in vernacular languages, linguistic differences did not stop them from recognizing their bond with Mexican Catholics.
during the period of “The Reform” (1854-76) and then after the Mexican Revolution (1910-1917), laws were put in place not only to separate Church and state, but to restrict Catholics’ ability to practice and transmit their faith in public life....
Pope Pius XI, in the encyclical Iniquis afflictisque (November 18, 1926), denounced the “sad and unjust conditions under which the Catholic religion” was suffering in Mexico and the difficulty of finding a solution to “the heavy burden of these great evils” (The Recent, Long-Hidden War for Religious Freedom, Aletia, 2/25/26).