Deductive reasoning. David Duke seeked to modernize the klan into something less overt. You're looking at the offspring.
The one difference being whites were never systematically persecuted by nonwhites in this country. Look, I don't have a problem with anyone wanting or not wanting to celebrate their whiteness, blackness, brown-ness, whateverness. I'm just not going to nod and smile at the ruse that the kkk suddenly decided that white preservation, and not supremacy, is now the goal.
Hey guys, we're just really interested in being proud of being white! Honestly! We left all that hating minorities crap back in the 60's. I'm sure they're swell and all, but I'd just like to celebrate my own race too. Wink wink nod nod.