The Racialism of the Korean Left
In The Gates of the Minjok, Michael Hurt examines the origins of the Pure Race (단일민족) Ideology in Korea, specifically its links to Nazism. He also quotes a Marxist philosopher on the origins of racism:

Various historians and philosophers have shown how deeply rooted in the notion of mankind, the human species, the progress of human culture - as they were elaborated in that great blossoming of universalism, the Enlightenment - were anthropological prejudices concerning races, or the natural basis of slavery, and indeed the very notion of race, which at that period first acquired its modern meaning.

It's been a long time since I've agreed with a Marxist on anything.

Here's another article on the same theme: [Michael Breen] Raising Little Nationalists. Here's a taste:

For the record, I have no argument with patriotism. Love of country is a good thing. But the education I’m taking issue with is not patriotic. It’s nationalistic. And nationalism is not about love of country. It’s about power. The nationalist does not share international values. That’s why he can go crazy over Dokdo but be unmoved by human rights violations in North Korea.

Some aspects of nationalist education are extremely nasty. For example, in a year or two, today’s 1st graders will be taught to be proud that Koreans are racially "pure." Hands up, children, if this reminds you of a World War.

Coming to Korea was an eye-opener for me politically. Here in Korea, the most vociferous propopents of racialism and nationalism are on the Left. In my political naïveté (I had not yet even heard of Russell Kirk (1918–1994)), I at first thought this was another Korean contradiction. Discovering that racialism and nationalism, and Nazism itself, were in reality Leftist, not Rightist, political manifestions was the beginning of my political awakening. Baudelaire famously noted that "The greatest trick the devil ever pulled was convincing the world he doesn't exist." The greatest trick the Left ever pulled was concincing the world Nazism was of the Right.

Soon, I came to agree with the "extreme rightist arch-liberal" Erik Ritter von Kuehnelt-Leddihn (1909–1999): "Right is right and Left is wrong."

[link to both articles via The Marmot's Hole]