There's an old Burkean critique that revolutionary ideologies are utopian. And then there's Vogelin's critique of revolutionary utopianism that says that the problem begins whenever you try to turn the tools of capital-T Theory on the dull stuff of material history.

I prefer the Deweyite critique that says that if you think you know what your revolution is going to bring, then your revolution is less complicated than a trip to the beach, and your Theory is little more than an etiquette book.