I'm not seeing it.
I don't think Mr. Stand has ever brought up race as a compelling point of any argument he's made.
He's a dick to everyone. Not just colored people. If he's indiscriminate in his poo slinging, then this supremicism you see is in your head.
He's a Nanner supremacist, if anything.
I wonder: would you be calling him a racist if you didn't think he was a white person?