"They're not too keen on non-whites."
I would concede this, if qualified. Those that behave in an unsociable manner, those that wantonly commit crime, who literally hate the very country that they batten off. I do not suppose the BNP is that enthusiatic in those cases. Just the same as the Victorian Londoner of means, feared and dreaded the people of the East-End slums. Mostly white, many Jewish and also the Irish.
A common source of dismay, is when the balance in numbers of indigenous Englishmen is threatened. I would say from my own experience and so glad to live over 400 miles from "The most diverse and multi-culturally successful city in North America" (Toronto Star, vis Toronto). Parts of it are known as a living misery .
Multi-culture seems not so bad- in small doses,
I agree with your post on all counts. Multiculturalism is one of those things that sounds nice and looks good on paper and perhaps in small doses but when unleashed it is like a cancer, quickly metastasizing and destroying the host organism, in this case whatever the city or country that enacts the cancerous policies.
Like so many Utopian ideas of the Left, it fails to take into account basic human nature, particularly among those who don't have a strong allegiance to the host country.