okay, sarcasm aside- when some of you said it very quaintly that anyone who is not white americans (because you said it yourself europeans are 'different' and some 'whites' are descendant from the British isles but not all of them) are genetically incapable to be proficient enough, it does mean you think are inferior than others because you think people are physically different because they're of a different race.
Well, racial differences aren't genetics, in fact we only have 0.5-0.1% nucleotide differences on average between people. Racial classifications is cultural. Physical differences like skin tone, eye color and hair color and predisposition to certain diseases are product of evolution and statistically depends on genetic drifts of a population and geographical variations. And for most part of the world, every population are linguistically diverse. Just because you hear them sounded different because they're different people than yours, doesn't mean they're incapable to sound like you in time especially when they're talking in the same language as yours.
My god, do you walk into your local mall and saw someone who isn't the right racial attributes and do you judge them immediately how they're going to sound different because of their race? Do you have a specific perception or guide about how certain race should sound like?
I thought people are generally happier when they're able to communicate in the same language regardless of regional accent or level of proficiency but apparently for some.... nope....
and what are these obsession with labeling people by color anyway?