Why is the idea about electing Jews, Blacks, Hispanics, Asians,Gays into office so perplexing 4 republicans?

There are plenty of Jews, Gays, hispanics, and even blacks on both political parities. With the exception that their the closet for the republican team. This closeteness even affects the Liberals. Poor Obama needs to act like a white nerd for every interview just to appease the m as a whole