"Keep your morality out of politics" is an historically aberrant and deviant mode of thought, and for the simple reason that ethics and politics are not really distinct fields; rather they are distinct expressions of the same thing, fields of inquiry which lead, ultimately, to the same object.
In fact, pretty much all the fields of philosophical inquiry are now conducted as if they were quite distinct from each other, so that ethics is totally unrelated to politics which is totally unrelated to epistemology and so on. Hence Rawls sought a theory of justice which was "political, not metaphysical." What a strange thought; its historical inauthenticity is one datum for the falseness of the endeavor even to find (that is, invent) such a theory.
For premodern man, ontology was the glue which held the philosophical endeavor together. Just as surely as talk of truth, beauty, and virtue are simply discussions about the good under different aspects, so too are talk about right action, right knowledge, the good life, the best government, and so on simply different expressions of the question of what it means for something to be. How can you ask what the "best government" is until you know what "government" is? What "best" is? What "is" is? Ontology made an organic and harmonious unity out of a philosophical enterprise that is now not even so much specialized or modularized as it is simply fragmented. The abandonment of organized ontology has loosed on the world a flood of errors.
What we have today are shards of philosophy: a vast number of schools of thought about different fields, the necessary connections between which have been severed, which may be mixed and matched arbitrarily to produce a functionally infinite number of combinations, with no real reason to pick any one of them or even a method for doing so. Had a revolution? Close your eyes, reach into the bag, grab seven metaphysical systems at random and see what social orders you can build on the resulting mix. Philosophy has reduced the social order to a generations-spanning game of Scrabble. A dress-up Barbie doll philosophy for a Barbie doll society.
One of the things that impresses me most about reactionary thought is its remarkable coherence: everything fits together; more importantly, everything points upward. Every so often, a thought strikes me (I need to get better about writing them down so I can blog them later), a necessary connection suddenly realized, another piece in the puzzle fit into place. It is not even that one arbitrary arrangement has been proved to me to be optimal; it is that the idea that there could ever be any other arrangement has been proved to me to be irrational.
All this convinces me that if the world is ever to be saved, a revitalization and revalorization of ontology will have some part to play in it.