The majority/minority status might have something to do with what you can get away with. White supremacy is deemed a threat by minorities, mainly because whites are still in majority. However if whites were a minority and someone started a white supremacist website, it wouldn't be taken as seriously or perceived as that much of a threat.
That said though I still think whites are the most hated of all races. We'd probably still be hated equally as much if we were an overall minority.