What is the name of those groups of gun-toting guys in the U.S. that lurk about in the woods in groups. They have it in their mind that they'll have to defend their land from "the man" or some such. They spend their week-ends in war/soldier training. They're racists.

Do you know who I'm talking about? There's a name for those groups (apart from "idiots")

militia? survivalists? extremist groups? skin-heads?

Survivalists - that's it! Thank you Eta

Doncha hate when a word escapes you like that. You know what it is, it niggles around in your brain, taunting you, but just won't come out.