I rather doubt that Trump is a supremacist but he does little to separate himself from them, and I think that is an error in judgment.
However, Hillary has escaped FBI castigation by the skin of her teeth. She came damn close to being insubordinate in her desire to maintain a private server. What Colin Powell did does not matter a whit. She's not beholden to his practices. I think it was convenience tied to arrogance and a disregard for the rules that led to this situation.
Is that a tip off about her thinking? Or do we chalk this off as an unfortunate innocent practice?