Bull$hit!
There are notable exceptions, and, yes, my statement was hyperbole, but I stand by the proposition.
The fact that 90+/- of black voters in primaries to date, have supported Obama (vs. Clinton) is a clear indication of the prejudice of black voters in the Democratic party.
I am sorry, the only explaination for this is discrimination by blacks in favor of Obama.
Similar prejudice has been demonstrated by Mormons, with 90+/- of Utah voters voting for Romney, 88% of self-identified voters in Arizonia voting for Romney (with similar figures in a couple other states), and 92% of donations from Utah going to Romney.
Huckabee had similiar (but less drastic) disproportiate support among his fellow evangelicals.
Identity politics and prejudice is alive and well in this nation -— in both the Republican and Democratic parties.