Sucked that they did that. But they were there for centuries; their kids didn't do it. If Moorish descendents are bereft of virtue owing to the sins of their fathers, does the same apply to the descendents of the European invaders of America?
Yes, a social structure similar to Jim Crow in the USA should be condemned not celebrated as being tolerant or some mythical place. It was not a good culture, it was not kind. Islam only allowed enslavement on non-muslims. Nice 'tolerance'. You shouldn't enslave people, and my people we mean non-believers. As many as 1.25 million white Europeans were enslaved by Islamic slavers. Much tolerance, much beauty.
I think you need to touch grass, friend. Dehumanization of the infidels is what allowed Moors to enslave Europeans. Take care not to become their mirror image.