273 In this regard, I wish to cite the following memorable statement: “If there is no transcendent truth, in obedience to which man achieves his full identity, then there is no sure principle for guaranteeing just relations between people. Their self-interest as a class, group or nation would inevitably set them in opposition to one another. If one does not acknowledge transcendent truth, then the force of power takes over, and each person tends to make full use of the means at his disposal in order to impose his own interests or his own opinion, with no regard for the rights of others… The root of modern totalitarianism is to be found in the denial of the transcendent dignity of the human person who, as the visible image of the invisible God, is therefore by his very nature the subject of rights that no one may violate – no individual, group, class, nation or state. Not even the majority of the social body may violate these rights, by going against the minority”.
Source: Fratelli Tutti (Vatican.va)