The earliest and most basic definition of community—of tribe—would be the group of people that you would both help feed and help defend. A society that doesn’t offer its members the chance to act selflessly in these ways isn’t a society in any tribal sense of the word; it’s just a political entity that, lacking enemies, will probably fall apart on its own. Soldiers experience this tribal way of thinking at war, but when they come home they realize that the tribe they were actually fighting for wasn’t their country, it was their unit. It makes absolutely no sense to make sacrifices for a group
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