"These early attitudes, the post-World War II push toward assimilation and American Jewry's increased involvement and identification with Israel, have made their mark on the present generation. When I would tell people that I was teaching Yiddish, most-especially Jews-were amused. Over and over again, I heard: "How cute!" I would counter that Yiddish is a language like any other. Generations of Jews in Western and Eastern Europe spoke it and wrote it, just like any other people in any other language. But here in America what had been mame-loshn to millions of Ashkenazi Jews, what had been a medium through which Jewish history, culture, politics, ethics were transmitted, had become a joke, a joke usually made by Jews, a joke now so Americanized it has become the property of the gentile mainstream."
January 1, 1970
https://en.wikiquote.org/wiki/Irena_Klepfisz