On the Fact that from the Eighth to Eleventh Century the Norse Vikings Captured and Enslaved Hundreds of Thousands of White Europeans and Sold a Significant Percentage of These Captives to the Abbasid Caliphate (i.e., Muslims)

  So instead of Black Africans selling other Black Africans to White Europeans (as took place during the Trans-Atlantic slave trade), we have White Europeans marketing other White Europeans to Berbers, Arabs, and Persians, all of whom were Islamic and, dare I say, a little bit swarthy. Interesting, and more than a smidge ironic, I'd say.