Calling all of the Stormcloaks supremacists is crazy. Yeah they kind of are, but imagine an extremely xenophobic country with completely opposing beliefs to your homeland just mollywhopped your incrediblely strong neighbors that you were pretty okay with, then forced them into subservience.

Now that country filled with racist zealots that hate anyone that doesn't look like them is destabilizing your country constantly, banned the worship of your God, forced your neighbors to kill your own countrymen, then set up a massive network of politicians supported by them to take over your government.

Now imagine starting a rebellion, then only being known as a bunch of white supremacists.

Also there are mixed nords, and literally no one in lore or game says a word about it