I really don't know anymore. I used to believe they really knew the truth but just spread malicious lies for political advantage. But more and more now, I'm coming to see that the Liberal mind simply perceives a world in some cases completely detached from objective reality. I hate to say it's a genetic defect, but it's obvious to me that there's some kind of faulty wiring at play.
It seems to me (through discussions with a few liberals) that they have blinders on and just refuse to see the truth.