A people/clan/culture are completely wiped out (or at least reduced to a tiny remnant) by one of their own.
- "The main entry did it. It killed all the trope pages. They're all gone, destroyed by one of their own..."
http://tvtropes.org/pmwiki/pmwiki.php/Laconic/GenocideFromTheInside
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A people/clan/culture are completely wiped out (or at least reduced to a tiny remnant) by one of their own.