Hannity and ilk have the job of of providing seemingly rational even scientific sounding rationalizations to keep the conservative brain entrapped. The purpose isn't to provide factual information but a shortcut to confrontational bias. I think this is true for both sides of the aisle, but liberals are better equipped to avoid it or see their way out of it when additional information is acquired. The reason for this, as usual, is the enlarged right amygdala and smaller cingulate found in self confessed conservative and the opposite in liberal brains when scanned. Conservatives are simply more motivated to deny reality than liberals because they are less able to avoid feeling fear when their ego beliefs are challenged. The right amygdala is the brain structure of fear and the cingulate the the part that suppresses fear so the reasoning part of the brain can think.
A culture that can harmonize these two attitudes, liberal and conservative, having both present and in balance rather than at war, will survive optimally, in my opinion.