Was he espousing this philosophy or merely using the philosophy of his audience to say: "even by your own philosophy, you're wrong"? But "white people are mean

Was he espousing this philosophy or merely using the philosophy of his audience to say: "even by your own philosophy, you're wrong"? But "white people are meant to be polite and respectful to one another" is so counterfactual it's hard to imagine anyone actually believes that.