Courtesy A Libertarian Walks Into a Bear: The Utopian Plot to Liberate an American Town (And Some Bears) by Matthew Hongoltz-Hetling, PublicAffairs, 288 pages. $28. Many volumes have been written about the back-to-the-landers who flooded into Vermont in the 1960s and '70s, chronicling their colorful experiments with communes and other new forms of community. Even as we celebrate our own quirky utopians, however, Vermonters may know considerably less about a back-to-the-land movement of more recent vintage that happened right next door to us in the Granite State. Unlike those older experiments, the Free Town Project was a movement of libertarians who organized to free themselves from the shackles of government. And Vermont journalist Matthew Hongoltz-Hetling, a contributor to the