Right extreme would be literal anarchy, as in the absence in any form of government (not the snotnose punks who do acts of violence and are nothing more than tools for the Stalinists) - an extreme that simply does not work, a position that even hardcore libertarians (note lower case) would agree with. My view of it not working is based on the fallen sin nature of man (a Biblical viewpoint, and Paul descibes in Romans that the government does have a rightful place, yet is accountable to a higher Law, however that’s another topic and another realm).
Amazing how another Paul (as in the presidential candidate), gets a lot of support from MoveOn.org types and Stormfront types. Both as far as I am concern part of the left. As in state control, state meddling to the extreme once they get their way - may that never be.
Your response is thought provoking; however, you lose a bit of credibility because of your tagline.
You seem to have accepted the conventional wisdom that "liberal" in itself is destructive, when it is merely liberal, and there are degrees of liberality which a quite at home in any reasonable discourse; however, the left has crossed the line into "mental disorder," yet you seem to ascribe that to liberals.
In the same way you claim that Stalin invented the association between the right and fascism, the left has created the association between itself and "liberals," many of whom are pretty good folks, not the militant deconstructionists of our time who conservatives too often call "liberals."