Racists tend to be the mediocrity of White society, so they try to use the fact that they were born White to define themselves in order to compensate for their lack of personal value. Their entire sense of self-esteem is based more upon group association than individual value and accomplishment, or the claim that, "Well, at least I'm better than them."
That's what's driving radical conservatives so crazy about President Obama - he's walking, breathing, evidence that they cannot claim superiority by virtue of the color T-shirt they were born in, and that simple fact alone is causing them to suffer a severe attack of cognitive dissonance before the eyes of the entire world. That's also why they're so determined not to allow President Obama to be successful, even if it means destroying the country - and international corporatists are using the social division inherent in those sentiments to lower the standard of living of the American middle class.
Thus, this entire nation, and the future of our children, is being threatened by the desperate attempt of a handful of insecure bigots to maintain their delusions of superiority, and as far as they’re concerned, if the country has to be sacrificed for that cause, so be it.