I couldn't agree more.
While your point about racism in politics is completely correct, it's even deeper than that. All politics in this country has become an exercise in scorched earth tactics.
I wonder what would happen to a candidate who ran on the platform, "I'm going to try and make as much money for myself as possible when I get elected. In doing that I'm going to try and get as much money for my constituents as possible so that you keep me in office. I will however not lie to you. I will tell you which lobby has my ear, who I accept gifts from and detail the rationale behind my every vote. I will practice self-interested altruism because what's good for you will end up benefiting me."