From a story on The Rural Blog by Al Cross headlined “If our national divisions run along rural-urban lines, rural news media should pay attention to that”:

Economist and liberal New York Times columnist Paul Krugman, in his effort to figure out what made the Republican Party “so extreme,” writes that he looked for “cases in which right-wing extremism rose even in the face of peace and prosperity, and I think I’ve found one: the rise of the Ku Klux Klan in the 1920s.”