Christopher Hitchens has a review at Slate of a book about the North Korean regime's racist policies. It isn't surprising that a "black Cuban diplomat was almost lynched when he tried to show his family the sights of Pyongyang," but I guess the racism is so virulent that even their East Asian neighbors are reviled as racially impure:
North Korean women who return pregnant from China—the regime's main ally and protector—are forced to submit to abortions. Wall posters and banners depicting all Japanese as barbarians are only equaled by the ways in which Americans are caricatured as hook-nosed monsters.
And then there's this horrifying statistic:
Second, a North Korean is on average six inches shorter than a South Korean.