I think when people refuse to look at facts, it is because they are arrogant, not believing they could possibly be wrong. Ignorant of the facts, stupid, or willfully blind.
I see your point, but there is another possibility.
Fear.
The prospect of being forced to re-examine your basic worldview is terrifying to most people. It was the driving force behind Christians fed to lions and heretics burned at the stake, not to mention the gulags and concentrations camps.
Liberals have a remarkably simplistic worldview, despite their recent vogue for describing themselves as “the reality-based community.” (Chuckle, snort.)
Examining facts that challenge thei worldview might, to their minds, require reconsidering the whole edifice. This is the mental equivalent of an earthquake, everything they think of as solid is so no longer.
They deal with this by clinging more desparately to their worldview, just as those of other religions often do when they are challenged.