Trying to equate the effects of cognitive dissonance with "right wing" is incredibly dishonest; this behavior is common to all of humanity.
Observe for instance the reviews of the "Global Warming" studies used by the UN. The left wing reacted similarly by strengthening their support of the positions they had already taken, as opposed to examining the controversy around the studies and possibly revising their conclusions. It doesn't matter what your political leanings, we are all subject to this behavior.