I'm curious what you mean by self-righteousness.
I just know a few liberals that think they have all the answers, but realistically, they're just whining about the current crop in administration at present. I am a person that does entertain the conspiracy theories to the degree that too many facts line up that don't get adequate answers. For example, the blast cut looking steel in some 9/11 photos. I discussed the steel itself and just went and found a picture of an image to discuss. I was then ridiculed for where the image came from and the topic degraded to namecalling on some peoeple's parts from there. When it degraded to name calling, that's when I consider the arguers self righteous.
The overall difference to me is that while conservatives tend to propose solutions based on the fact that the real world is a nasty, gritty, brutish place where there are indeed bad guys who wish to kill you out there, liberals propose utopian solutions based on a reality that never existed and never will.
Well put, and this is a distinct difference between myself and some of my more liberal friends. They tend to argue in idealistic utopian terms, I tend to argue in realistic terms. This creates some long discussions. I just had one a few night ago with a liberal leaning friend and he seem somehow convinced the entire world operates on a somewhat fair basis, or should, Idealistically anyhow. It doesn't, never has, and this is where it quickly segways to this....
I've had physics related arguements with folks who don't know anything about physics degrade to namecalling all based upon the first law of thermodynamics.
I also tend to lack good arguement skills in regards to politics myself and often "step in it" by choosing my words improperly or not doing adequate homework first. But, as all things internet, I tend to think people are a little overboard on forums compared to when you meet them out in the world.