Right, I'll overlook the fact you just contradicted yourself because you've provided a rationale which explains your earlier statement, so I'll address that:
My question would be one pertinent to all politicians: Given that there appears to be a stark difference between the ideal and the practice, how far must one go to address the popular body in order to change it? In Obama's case, I can rebut your argument by citing his lamentation of the decline of democracy (again see the article "This Magnet Only Gets Stronger" on the frontpage archives). Not only does this imply that he does not believe that only Republicans can be racist, but in specifically criticising the shift in perception toward diametric oppositions, he also implies that one ought not to consider his words in such a light. Ironically, your claims have just demonstrated precisely what he wishes were not the case, but nonetheles is inevitable as the aggressive game of two sided combat has taken a firm hold.