That's what I was preemptively refering to. Their contribution is sickeningly exaggerated. "Rock 'n' roll" becomes so broadly defined as to encompass nearly all popular music created by others (especially whites) that doesn't belong to an already long-established genre (i.e. country & western). That's the way "they" have chosen to aggrandize themselves. It's not enough for them to simply say, "Look at us. Judge us on the merits of the product." No, it always has to be to the detriment of everyone else - the hallmark of immaturity.
They can keep their jazz and their blues. As for "their creation" of the thing called rock 'n' roll, that's fine. Just recognize that rock 'n' roll is nowhere near as broadly defined as they'd like you to prostrate yourself and believe. New genres pop up all the time. And they do not all issue forth from the all-mighty black man.
You can have the last word. Too much talk of race gets old quick. People are people in my opinion. They are all created in the image of God and therefore deserve respect - yourself included. That said, there are times when certain groups will act in certain off-putting ways. And when this happens sometimes it's best to avoid association with them. Recognize it or not, this is our cultural climate. And this is why i refuse to embrace "black" music.