It's amazing that it has taken this long. Republicans were the ones who ended slavery, while Democrats fought for it. Republicans opposed Jim Crow Laws, which Democrats passed. Republicans passed the 1964 Civil Rights Act with greaters numbers and percentages than Dems. Republicans are for school choice, which blacks overwhelmingly support. Republicans favor race-neutral policies, which used to be the position of most blacks a generation ago... in fact, blacks voted for the GOP by the same 90-10 margins for almost 70 years after the Civil War. They switched once the Dems changed from favoring racial preferences against blacks to favoring discrimination in favor of blacks. Sadly, most blacks apparently drop their principles and vote for racism, as long as it is their group that comes out on top.
(Personal anecdote: during a debate at Law School, one black business-owning lady, who seems conservative on many other issues, said "I don't see why any black person would oppose affirmative action. It would be like shooting yourself in the foot, denying yourself an advantage like that!" I responded, "So did every white who fought for, marched for, and died for equal rights 'shoot themselves in the foot', since they opposed advantages for their own race?" She didn't reply.)
Of course she didn't. But I'll bet you that you got her to stop (albeit only for a minute) and think.