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If you see the first roman accounts of Christianity you'll see it being labeled as excessively religious, ideologies being modern religions and how there are degrees of how "totalitarian"(in the sense of it being a complete explanation of human social nature) ideologies are you could indeed argue that Christianity for Rome was like the that. And the incompatibility of Christianity and traditional Roman Paganism being one of the reasons for the fall of the empire.
All that to say, Christ is King.