On the Fact that (According to Historians, Garcilaso de la Vega and Milton Meltzer) the Incas and the Aztecs Both Practiced Slavery and it Was Amongst the Most Brutal and Virulent Form of it Ever Instituted (the Fact that it Included Such Barbarous Acts as Cannibalism and Human Sacrifice)

Yeah, I think that even the most ardent SJW is going to have a hard time blaming white Europeans males for this one - try though they may.