It is well known that blood banks have a shortage of black and asian donors in this country. They're needed because blood isn't universal, neither are organs. I believe that over the thousands upon thousands of years that we have mixed quite well and that evolution eventually allowed us fruits of our breeding. but why is the blood different? Organs from a black man will be rejected by a white man and vice-versa. This is true of all races.

The fact that we are different doesn't change a thing, we have mixed well for thousands of years. Maybe the authorities already know this and are keeping it from us for fear of further segregation.