My Grandpa Was Part Of The Nazi Language Police

Martin Puchner, Harvard comp lit professor and editor of The Norton Anthology of World Literature, writes about Rotwelsch — an amalgam of colloquial German, Yiddish, and Romani spoken for centuries by itinerant people in Central Europe and incomprehensible to outsiders — and about how he discovered that his grandfather, a historian named Karl Puchner, had worked with the Nazi regime to suppress Rotwelsch and keep the German language pure. – Literary Hub