Opposed to Hitler? I don't know... One of the characteristics of german fascism is Nazism. Here Hitler certainly adopted a lot from the USA, where even after the victory over nazism, black US soldiers were forbidden to enter cafes where white “aryan” germans could go...
Hitler simply applied to whites, what civilized Anglo-Saxons had been applying for centuries to “subhumans” with darker skin color, only he went to the end, in which he was undoubtedly secretly and not only sympathized by many people in the USA, England and France.