Freehold by Michael Z Williamson. I'm sure some folks here have read it already, but it's a science fiction novel about a planet basically ran by libertarian ideals. Which of course pisses off the Earth "United Federation of Planets" statist government to no end, so they attack and try to hold the planet, since how dare anyone try to rule themselves! The war is fought with .. well, give it a read, I'm sure you'll love it. I just gave a copy to a member here as a Christmas gift.
Of course, this is book one in a series.
If anyone does the facebook thing, send a friend request to the author. He'll gladly respond, assuming he's not locked out of his account again for telling the FB admin nazi's what they can do with themselves with rusty farm implements, etc., all the while causing mayhem.