I've noticed many of my friends on the left and right display  nearly identical behavioral characteristics when it comes strongly held beliefs.  It becomes more acute as they move further in either direction.  Reason/facts/empirical evidence/science...all "out the window".  

A couple examples come to mind:

=>Creationism 

=>Government can correct every "cosmic injustice"...every lunch is free.  

It's called DENIALISM!  

“It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so.” Mark Twain