@snood,
I think that for the clown from down under, it's just a case of arguing for argument's sake--he so obviously knows nothing about the subject. But for others, yeah, it looks like it galls the hell out of them that there are successful black men and women. In fact, i suspect that it galls the hell out of them that there are any people around who are not white Protestants. Some of the worst cases of fundamentalists hate Jews and Catholics, too--although some modify it by deluding themselves that when the last trump sounds, the truly righteous among the Jews will convert.
This page at Wikipedia tells about the Lily-Whites who drove blacks from the Republican Party. But its focus is really too narrow. The Lily Whites were more than just a political movement among Republicans, they were a social movement among Protestants (that's what the "Lily" part refers to), and it was strong both in the North and the South. They were anti-Jew and anti-Catholic, too, and therefore, anti-immigrant (they characterized all immigrants as Jews and Catholics). Thomas Nast, the famous political cartoonist, was virulently anti-Catholic, and specifically, anti-Irish. Even Theodore Roosevelt, Jr., probably the last Republican President for generations to make direct appeals for the black vote, was racist in this white Protestant tradition. Based on the then popular theory that white Protestants had an obligation to rule the world (C.f. Kipling's "The White Man's Burden"), Roosevelt called Margaret Sanger a race traitor, because her birth control campaign would, he claimed, reduce the number of white Protestant babies born in the country.
I think it's a basic racism which has not only never been eradicated, but which has been cherished, if only behind closed doors. Yeah, Mr. Obama must drive them goofy boys crazy.