I've occasionally wondered that as well. In attempt to arrive at some sort of understanding I've visited the demo underground nuts and read through there some. It would appear that there are some who are moderately intelligent, but pretty much the whole mob is wrapped up in hatred over various issues as well as a massive dose of emotionalism, also over various issues. So the liberal mindset (and mind isn't necessarily the best term apparently) is one of hatred and emotional imbalance.