Ibn Khaldun justified enslavement of Africans and Slavs purely by their remoteness.

Evidence

Khaldun then painted a very different picture of sub-Sahara Africa in The Muqaddimah: “The Negro nations are, as a rule, submissive to slavery,” Khaldun surmised, “because (Negroes) have little that is (essentially) human and possess attributes that are quite similar to those of dumb animals.” And the “same applies to the Slavs,” argued this disciple of Aristotle. Following Greek and Roman justifiers, Khaldun used climate theory to justify Islamic enslavement of sub-Saharan Africans and Eastern European Slavs—groups sharing only one obvious characteristic: their remoteness. — Ibram X. Kendi, Stamped from the Beginning, 45

Categorization

• XREF: Shows the ignorance->hate->discrimination model historically: a great scholar, lacking firsthand knowledge, produced the justificatory theory. Directly relevant to testing Kendi’s inversion, since here the idea (climate theory) seems to precede and enable the enslavement policy — a genuine test case for the reader’s stated goal.
• QUESTION: This is a strong candidate counterexample to Kendi’s policy-before-ideas inversion: Khaldun produced a racist theory to justify an already-existing practice of enslavement — which actually fits the inversion (the practice was already there). Worth probing whether any case in the book shows ideas genuinely preceding policy rather than rationalizing it.