There are so many other reasons to hate Obama for, of course! (Meanwhile what party did/does ML King, Ed Brooke, Condi Rice etc belong to? Not the Dems. Which party was associated the KKK and had Bobby Byrd as a member? Not the GOP. The party that freed the slaves and fought for civil rights: Republicans.)
There is not much answer for the left when you ask them if they seriously think that you’d support 0bama’s Marxist “fundamental change” of the country if only he were white.
Leftists have no shame, and very little logic capability, so they wouldn’t even address this argument.