Trump was not talking out how "some people" behaved. He was talking about how he behaved.

The question of whether Trump is personally particularly racist is not really the point. It has been credibly suggested that Oswald Mosley was not himself antisemitic. But he set out to appeal to antisemitism, and to encourage it and exploit it. And that is what Trump has done with racism.

I rather think that if he had been in a situation where he saw anti-racism as a winning card, he'd have played that.