Ethnophyletism – Филетизм – from the Greek ἔθνος (ethnos) "nation" + φυλετισμός (phyletismos) "tribalism":
a heresy and the Bane of Orthodoxy; the chief impediment to the Orthodox finding and presenting to the Catholic hierarchy a model of ecclesiastical Primacy at the universal level which is both canonical and viable.

Le Panthéon a été conçu et construit comme une église, dédiée à Sainte-Geneviève, avant d'être transformé au cours de la franc-maçonnerie Révolution française à un but incomparablement moins digne.
Il fera une belle mosquée pour les Français, sous la suzeraineté musulmane à regarder et à se rappeler comment ils ont perdu leur chemin avec leur Église et de l'identité civilisationnelle chrétienne.

Le Panthéon was conceived and built as a Church, dedicated to Saint Genevieve, before being turned during the Freemasonic French Revolution to an incomparably less worthy purpose.
It will make a nice Mosque for the French under Muslim suzerainty to look at and remember how they lost their way along with their Church and Christian civilizational identity.

The point cannot be too much insisted upon, nor too often repeated, so strange is it to our modern modes of thought, and so essentially characteristic of the first centuries of the Christian era and the formative period during which Christian civilization took its shape. Men lived as citizens of one State which they took for granted and which they even regarded as eternal. There would be much grumbling against the taxes and here and there revolts against them, but never a suggestion that the taxes should be levied by any other than imperial authority, or imposed in any other than the imperial manner. There was plenty of conflict between armies and individuals as to who should have the advantage of ruling, but never any doubt as to the type of function which the "Emperor" filled, nor as to the type of universally despotic action which he exercised. There were any number of little local liberties and customs which were the pride of the separate places to which they attached, but there was no conception of such local differences being antagonistic to the one life of the one State. That State was, for the men of that time, the World.

The complete unity of this social system was the more striking from the fact that it underlay not only such innumerable local customs and liberties, but an almost equal number of philosophic opinions, of religious practices, and of dialects. There was not even one current official language for the educated thought of the Empire: there were two, Greek and Latin. And in every department of human life there co-existed this very large liberty of individual and local expression, coupled with a complete, and, as it were, necessary unity, binding the whole vast body together. Emperor might succeed Emperor, in a series of civil wars. Several Emperors might be reigning together. The office of Emperor might even be officially and consciously held in commission among four or more men. But the power of the Emperor was always one power, his office one office, and the system of the Empire one system.

It is not the purpose of these few pages to attempt a full answer to the question of how such a civic state of mind came to be, but the reader must have some sketch of its development if he is to grasp its nature.

The old Mediterranean world out of which the Empire grew had consisted (before that Empire was complete—say, from an unknown most distant past to 50 B.C.) in two types of society: there stood in it as rare exceptions States, or nations in our modern sense, governed by a central Government, which controlled a large area, and were peopled by the inhabitants of many towns and villages. Of this sort was ancient Egypt. But there were also, surrounding that inland sea, in such great numbers as to form the predominant type of society, a series of Cities, some of them commercial ports, most of them controlling a small area from which they drew their agricultural subsistence, but all of them remarkable for this, that their citizens drew their civic life from, felt patriotism for, were the soldiers of, and paid their taxes to, not a nation in our sense but a municipality.

These cities and the small surrounding territories which they controlled (which, I repeat, were often no more than local agricultural areas necessary for the sustenance of the town) were essentially the sovereign Powers of the time. Community of language, culture, and religion might, indeed, bind them in associations more or less strict. One could talk of the Phoenician cities, of the Greek cities, and so forth. But the individual City was always the unit. City made war on City. The City decided its own customs, and was the nucleus of religion. The God was the God of the city. A rim of such points encircled the eastern and central Mediterranean wherever it was habitable by man. Even the little oasis of the Cyrenæan land with sand on every side, but habitable, developed its city formations. Even on the western coasts of the inland ocean, which received their culture by sea from the East, such City States, though more rare, dotted the littoral of Algeria, Provence and Spain.

Though the son of a hero, Петар Принцип-Petar Princip, who had fought the oppression of the Muslim Ottoman Turks and who named his son after Archangel Saint Gabriel, unfortunately the dirty little coward with a napoleon complex, Гаврило Принцип – Gavrilo Princip (25 July [O.S. 13 July] 1894 – 28 April 1918), didn't think it was enough to join with Muslims in the "Black Hand - Црна рука" in support of some idiotic and historically absurd movement of Pan-Southern Slav Nationalism-Југословенство — Уједињење или смрт – Ujedinjenje ili smrt – Unification or Death.

— ?!? unificaition of what and under whom and in pursuit of what ?!? —

... and to murder on 28 June 1914 the heir to the throne of the thousand-year-old Donaumonarchie, Archduke Franz Ferdinand — unwittingly setting in motion the events which lead to the Great Twentieth Century Civil War of European Christendom 1914-1945. Instead the little shit also murdered his wife, the Bohemian-Czech, Žofie-Sophie. Franz Ferdinand was a friend of the Slavs and of subsidiarity and of making the Slavic peoples equal partnes in the Austro-Hungarian Empire, a Third Crown to join those of Austria and Hungary, so the nationalists and confused irredentists saw him, however paradoxically, as an enemy. During the Communist-cum-bizarre-Nationalist Yugoslav-Southern Slav days/experiment, the Latin Bridge was actually renamed after this absurd peti-personage: the Princip Bridge – Принципов мост!

To delight and serve the communist-cum-nationalist leader Enver Hoxha (in power from 1944 until his heart attack and burial in 1985 in a pyramid to make Mao take pause) this nationalist mosaic adorns the facade of the National History Museum in Tirana.

Hey, a woman soldier leads the way!

The Communists were prominent among those at the vanguard of this movement, to help destroy the bedrock of Christian civilization — the family — through the additional means of turning women into soldiers and therewith destroying in men the instinct to protect women and children.

"The only thing the Church can never sanction, and in that she is the faithful organ of the truth and the will of God, is divisions and national rivalries as a definitive condition of human society. The true Church will always condemn the doctrine that affirms that there is nothing beyond national interests, this new paganism which makes a nation its supreme deity, this false patriotism which wishes to replace religion. ...

"It is not in the West, it is in Byzantium that the original sin of nationalist particularism and cesaro-papist absolutism have, for the first time, introduced death to the social body of Christ. And the successor of Byzantium now with responsibility is the Russian Empire. And today, Russia is the only country in Christendom where the national State affirms without reserve its exclusive absolutism in making of the Church an attribute of nationality and a passive instrument of the secular government ..."