Please read this powerful and thought provoking article by permaculturist Toby Hemenway on our society vs. the nomadic societies we've destroyed. His thoughts closely echo my own.
We also stopped at Little Bighorn on our move from Washington in 2008, and it struck me how recently this battle and the associated genocide had occurred. The house we now live in was built before the battle, on land also taken from natives who treated it far more respectfully and appropriately than we have.
In a short 150 years, our "domesticated" masses have destroyed the freest people on the planet. We're well on our way to destroying the possibility of anyone ever living in freedom again (I'll laugh at anyone who proclaims the US to be "The Land of the Free"), or living at all for that matter.
Those of us who accept the status quo, and who follow the default course that our society has laid out for us are guilty of the most heinous crimes imaginable, though most refuse to recognize it. The worst evil imaginable is little more than the product of our own ignorance and complacency.