Only one kinda supremacists? In the West, that's so, but they're not alone. Get a good look sometime at how the Far Eastern peoples--Chinese, Japanese, etc.--look on both European and African as barbarians. Read what bro Eldridge had to say about Arab racism after living eight years in Algeria. And take a LONG look at the Indian subcontinent as you remember that the Sanskrit word for caste (Varda) also means 'color'. For good or ill, white supremacists are not the only anti-black racists by any means. But, at least at the moment, they ARE the biggest danger as they're still the most powerful set of such racists.