I had a house full of folks interested in the Transition town movement last night, it was actually very interesting.
Roughly they campaign to make towns and cities as self reliant and self sustaining as possible which clearly puts them on a similar range of objectives as us.
Oddly enough quite a few of the members talk and sound just like preppers but have never heard the word "prepper". Growing their own food, generating their own power, having independent water supplies, protecting their family and environment, preserving foods produced locally etc
They want food grown as locally as possible, power generated locally, as much of our essential needs made locally , they seek a sustainable lifestyle that is more secure, reliable, ecological etc.
I found that many of their interests and concerns very similar to our and they share similar fears and concerns about recession, the global market place, employment, environment, feeding their family, surviving climate change, fighting pollution, creating local jobs, healthy living and self determination.
You may wish to browse their site and also look up your own nearest transition town you may find like minded folk to interact with.
http://www.transitionnetwork.org/