It's not "confidence", it's narcissism based in a sense of inferiority.
Do you think there may be a bit of a sociopath in him? That sociopath instinct would lead him to lash out against white society. As it is, the whites (his grandparents) were the only ones who did not desert him when he was growing up. The only blacks and whites he allies himself with are those who also hate whites and white entrepreneurial culture.