Why don't people accept the fact that the first Native Americans might have been Europeans?

afnan, i swear, you weird back derfball, you're a supremacist idiot just like the amazing racist jew. i dont wanna hear that indians are superior, that whites are superior, that blacks are superior, that jews are superior, that asians are superior, that christians are superior, that muslims are superior, etc. NOBODY is superior, ok, mammal? you racist MAMMAL