AFAIK the Neo-Nazis and most of extreme right shifted their views and fucused on ecology and environment matter some time ago. Why? Here is an example:
"When people attempt to rebel against the iron logic of nature, they come into conflict with the very same principles to which they owe their existence as human beings. Their actions against nature must lead to their own downfall."
(A.Hitler "Mein Kampf")
Here is more of this nazi-crap but on left side of this site you will see somehow familiar links
Well, III Reich embraced the ideas of enviromentalism in it's quasifeudal vision. So they are attracted to say - "See Fuhrer was right" - The huge city concept and culture of utilitarism were against "iron logic of nature" and the nature takes revenge. They quite often refer to earth cult - see: paganism, occultism and so on. Peak Oil seems for them to be appealing to put their views on track.
That's why I really oppose to the neofeudalism structure in Post-Peak society, I think it will be a strong move towards fascism with almost all its consequences.
In the times of hard depression the last thing we can defend is our personal freedom. That's why I speak freedom and not liberty. Freedom is a concept within society - that you can do what you want unless you are harming somebody's else freedom. You extract freedoms from social structures (not only from government but family, community, and other institutional restrictions also).
Liberty is different - it's given to you as a right or a grant. Liberty is a philosophical concept, that you have right to do something because you're prilvileged. Liberty needs law to be applied it is often refered to so called Laws of Nature. Defining liberty is like making religious dogma - you take it for granted without social context - because it's said liberties does not contradict and are objective. So who defines what is liberty, and who defines catalogue of it?
Frankly, it depends on a school of philosophy, nevertheless liberties are common for all polical ideologies - it says "You have the right to..." even Stalin and Hitler supported liberties - you had some rights - to live, work and so on. Liberty can exist without freedoms. Liberties in other words are laws which allow you to do something, they granted to you by the same social structures you fight to obtain freedoms. Funny, isn't it?
Even those nazis are "libertarian"... gee...