It assumes that because it is liberal it is intellectually superior, by far, to all others minds.
It assumes that its inherent humanistic tendencies are morally superior to any other value system.
It assumes it is more compassionate and by definition its resultant solutions inherently better for humanity but uses no standard measurement by which to compare.
It assumes it has the inherent right, nay the responsibility, to make decisions for others because they are not capable of making decisions for themselves.
It assumes a holier than thou persona based solely on its own internal emotional self-righteousness.
It assumes that all its judgments based solely on its own internal evaluations and not on empirical data are, just by the origin of their formation, indisputable.
It assumes that once it makes an evaluation there is no argument, thought, discussion or opinion worthy of further evaluation.
It assumes any and all solutions it creates always solve the problem in question but abhors and rejects subsequent changes to its solutions, even in the face of glaring failures.
It assumes that it is never wrong and any other mind is never right.
It assumes, for no valid reason, that it has the right to be the single judge of the quality of its own intellect and that all other intellects are inferior because they are not liberal.
It assumes its thoughts descend from a higher plain.
And finally, it assumes that there is no higher source of intellectual thought than the liberal mind, even though that conclusion is antithetical to simple logic.
In short it is, again by definition, the most closed mind in existence because it engages with the temerity of undeniability that it assumes itself to be the ultimate source of rational human thought…or that it is, by its own ultimate arrogance, the God of this earth.