Are you a racist? It's very silly. Probably you have problems with self esteem and you're trying to establish themselves at the expense of imaginary superiority based on race. The most striking example for you. Obama is African American and a lot smarter than the white Trump. And there are many such examples.
Its obvious OP is a racist and even his later comment on your post attest to the fact that he is blinded by racism and equally have no content to deliver. However, he is entitled to his opinion, we have seen white guys performed below expectations and the same thing goes for black guys, if any one has offended you, there is no need to generalize rather judge each individual on the basis of their attitude to you and that is my addition.