From “A Letter from the Assembly of the Roman Catholic Bishops of Canada on the Occasion of the One Hundredth Year of Confederation”:

The Problem of Minorities
It is now recognized that the Indians and Eskimos have often had to endure, and sometimes still endure, the effect of prejudice, ignorance, indifference, and even injustice. Since these are the descendants of the first inhabitants of America, they enjoy a unique right to the respect and understanding of all, and to the benefits of the kind of positive policy in favour of minorities of which John XXIII was speaking [in Peace on Earth, 11 April 1963, III, 95: “It is quite clear that any attempt to check the vitality and growth of these ethnic minorities is a flagrant violation of justice; the more so if such perverse efforts are aimed at their very extinction”].