This post at Crooked Timber offers yet another example in the on-going discussion of "epistemic closure", with Quiggin offering the word "agnotology" to describe the phenomenon of the right existing in a weird, fact-free Universe of their own making.
Considering my own exposure to such groups on the right-wing internet, I would offer "agnophilia" - lover of no knowledge - as the proper term. These folks aren't just ignorant; they revel in their ignorance, refusing to consider counter-evidence, preferring their biases and arguments not suffer any interference with reality or fact.
UPDATE: Scott McLemee reports on a new anthology entitled (sob, my preferred word is wrong) Agnotolgy:The Making and Unmaking of Ignorance. Check out his review.