2 It has always been the habit of Catholics in danger and in troublous times to fly for refuge to Mary, and to seek for peace in her maternal goodness; showing that the Catholic Church has always, and with justice, put all her hope and trust in the Mother of God. And truly the Immaculate Virgin, chosen to be the Mother of God and thereby associated with Him in the work of man's salvation, has a favour and power with her Son greater than any human or angelic creature has ever obtained, or ever can gain. And, as it is her greatest pleasure to grant her help and comfort to those who seek her, it cannot be doubted that she would deign, and even be anxious, to receive the aspirations of the universal Church.
Source: Supremi Apostolatus Officio (Vatican.va)