"The nutcases who are the right-wing analog of this kind of thinking--like the ones who think all the Mexicans should be deported, that teaching evolution in schools should be illegal, or that all the blacks should be shipped back to Africa--somehow never seem to show up in such places. They're mostly confined to the internet and pamphlet-on-the-corner ghetto where they belong.

This difference in how these different crackpots are received by the media and others is why I think left-wing nuts are more dangerous right now than right-wing ones."

Precisely. Fortunately, extreme right-wingers are percieved as such both by mainstream media and by American society at large. Unfortunately, extreme Marxists literally flourish in university campuses coast to coast with their far fewer right wing nut jobs confined to isolated (but notable) spots like Bob Jones University. Public attempts to critique leftist pronouncements of truth is met by apologists with convoluted reasoning and their ultimate nuclear weapon, the chant of "McCarthyism". Where are these self-same defendants of "free speech" with their apologies when anti-gay homophobes rant away? Oh, it's really all about saying anything to prop up their ideology. My bad.