49 Nor is there any fear lest the consciousness of universal brotherhood aroused by the teaching of Christianity, and the spirit which it inspires, be in contrast with love of traditions or the glories of one's fatherland, or impede the progress of prosperity or legitimate interests. For that same Christianity teaches that in the exercise of charity we must follow a God-given order, yielding the place of honor in our affections and good works to those who are bound to us by special ties. Nay, the Divine Master Himself gave an example of this preference for His Own country and fatherland, as He wept over the coming destruction of the Holy City. But legitimate and well-ordered love of our native country should not make us close our eyes to the all-embracing nature of Christian Charity, which calls for consideration of others and of their interests in the pacifying light of love.
Source: Summi Pontificatus (Vatican.va)