Now I won't talk about the term liberal more than I already have, except to say this: Don't call anyone in the US left-wing. Please. The Democrats are, much like The Labour Party, still to the right of center in any political graph you care to draw. There is no such thing as a mainstream left-wing party in the US or UK. They are just more left than the right wing party.
Having said that -- I agree with the Ferret, the article is good. It shows how many stupid people there are on all sides.
Notice I said all -- This is not a two sided issue. There is not just two sides to chose from, you can disagree with both mainstream sides in politics and guess what? You can still be right. The point is more that extremism, whoever it is, is retarded.
The moment you say, mentally or otherwise, this is what is right because it is what I believe is right, and everyone else must be wrong: You're an idiot. You lose debating privilages. It doesn't matter if you thump a bible or call Rush Limbaugh worse than Hitler. You're an idiot, you are hurting your "side" and you are ignoring the posibility that you could be wrong, mis-informed, or just plain dumb.
There aren't two sides, stop acting like there are. I'm no more left-wing than I am right, and have views in both arenas, but I've been called a "liberal" before now. It is these people, be their religious right wing, or democratic liberal tree huggers that are dangerous -- not because they are wrong, but because they refuse to accept that they could be.