Pope Pius XII decreed this feast day in 1954 in Ad Caeli Reginam.
‘From early times Christians have believed, and not without reason, that she of whom was born the Son of the Most High received privileges of grace above all other beings created by God. He “will reign in the house of Jacob forever,” “the Prince of Peace,” the “King of Kings and Lord of Lords.” And when Christians reflected upon the intimate connection that obtains between a mother and a son, they readily acknowledged the supreme royal dignity of the Mother of God.’
‘…In some countries of the world there are people who are unjustly persecuted for professing their Christian faith and who are deprived of their divine and human rights to freedom; up till now reasonable demands and repeated protests have availed nothing to remove these evils. May the powerful Queen of creation, whose radiant glance banishes storms and tempests and brings back cloudless skies, look upon these her innocent and tormented children with eyes of mercy; may the Virgin, who is able to subdue violence beneath her foot, grant to them that they may soon enjoy the rightful freedom to practice their religion openly, so that, while serving the cause of the Gospel, they may also contribute to the strength and progress of nations by their harmonious cooperation, by the practice of extraordinary virtues which are a glowing example in the midst of bitter trials.’