This illustration makes an exceptional graphic statement (apologies to the artist, I couldn't find a credit).
This reminds me of a personal experience. About six years ago, while working for a large advertising agency, I submitted a billboard design for a nationally-known health insurance company. The billboard featured a simple headline, along with a stock photograph of a doctor, who happened to be a black man.
A few hours later, the account executive asked to meet with me. He said the client liked the design, but had requested one simple revision: change the doctor from a black man to a white man. In our state, the client explained, people just weren't ready to accept the image of a black man as a medical doctor. I smiled to myself. My own personal physician is a black man.
It's encouraging to realize that, six years later, the majority of voters of the United States are willing to elect an African-American as our President.
(In retrospect, though, the client was right. In our state, every single county was won by McCain.)