It refers to pretty much anything. It's such an empty phrase.
I have heard it used to describe anti-rationality, though. Some people think that it's easier to decide nothing has meaning and nothing makes sense: that way, their own problems aren't their own fault.
true, it's as empty a signifier as "conservative" following the rise of the neo-cons. Basic terminology has been blurred to the point of hilarity in regards to any political term. I think this last election has pretty much ruined "intellectualism vs anti-intellectualism" for a few years at least.
I have heard it used to describe anti-rationality, though. Some people think that it's easier to decide nothing has meaning and nothing makes sense: that way, their own problems aren't their own fault.