Kissing frogs

Disney's back!
The newest, The Princess and the Frog, has been getting some crap because Disney's taken so long to create a black princess.
Now, I understand this culture's touchiness toward racism. Any public insinuation of a black stereotype or black subservience and you're toast. Browned to a crisp.
But what I don't understand is why Disney's getting skeptical glares for taking so long to put a black princess in the throne, when their first coloured princess was coronated over ten years ago.
I'd like to point out that there have been a Middle Eastern, Native American, and Chinese princess before the black one's coronation. Furthermore, I'd like to remind everyone that African Americans aren't the only oppressed race in history. Just in America, Natives have had land, livelihood and respect wrenched away from them, beaten into a sliver of their former glory. Chinese Americans have literally been excluded (Chinese Exclusion Act) from the country and have endured their share of discrimination. Japanese Americans had segregated schools as well and put in internment camps. Obviously, the list goes on. But what I'm trying to say is mainly aimed at the oversensitive black and white folk:

Get over it.