The Feast of Christ the King is a celebration of the Social Dominion of Jesus the Christ. Unfortunately , modern politics today tend to deny the Lord the Kingship the deserves on the simple reason that there is a separation of Church and State. But does the Church really recognize the separation of Church and State? The teaching of Pope Leo XIII says otherwise:
"This kind of liberty (liberty of worship), if considered in relation to the State, clearly implies that there is no reason why the State should offer any homage to God, or should desire any public recognition of Him; that no one form of worship is to be preferred to another, but that all stand on an equal footing, no account being taken of the religion of the people, even if they profess the Catholic Faith. But to justify this, it must needs be taken as true that the State has no duties towards God, or that such duties, if they exist, can be abandoned with impunity, both of which assertions are manifestly false. For it cannot be doubted but that, by the will of God, men are united in civil society; whether its component parts be considered; or its form, which implies authority; or the vast services which it renders to man. God it is who has made man for society, and has placed him in the company of others like himself, so that what was wanting to his nature, and beyond his attainment if left to his own resources, he might obtain by association with others. Wherefore, civil society must acknowledge God as its Founder and Parent, and must obey and reverence His power and authority. Justice therefore forbids, and reason itself forbids, the State to be godless, or to adopt a line of action which would end in godlessness - namely, to treat the various religions (as they call them) alike, and to bestow upon them promiscuously equal rights and privileges. Since, then, the profession of one religion is necessary in the State, that religion must be professed which alone is true, and which can be recognized without difficulty, especially in Catholic states, because the mark of truth are engraven upon it. This religion, therefore, the rulers of the State must preserve and protect, if they would provide - as they should do - with prudence and usefulness for the good of the community. For public authority exists for the welfare of those whom it governs; and, although its proximate end is to lead men to the prosperity found in this life, yet, in doing so, it ought not to diminish, but rather to increase, man's capability of attaining to the supreme good in which his everlasting happiness consists: which never can be attained if religion be disregarded."
Leo XIII, Libertas Praestantissimum (June 20, 1888), 21.