Summing it up as “anti-Enlightenment” is, at least, succinct.
Sayeth Orwell:
Many political words are similarly abused. The word Fascism has now no meaning except in so far as it signifies “something not desirable.”
Of course, in spite of the guy taking a bullet through his throat for literally being anti-fascist, more than once I’ve heard “if Orwell were alive today he’d be a Republican.”