Which Reminds Me

There is a theory that my mother's cousin Graden has some Indian ancestry somewhere in his background. I have not found any evidence to document that possibility but I cannot disprove it either. Many white Americans claim to be descended from Pocahontas whether or not the direct lineage can be proven. Even so, that has barely any meaning to me. Most of our ancestors were Scottish, English, Welsh, and other parts of Western Europe. I really cannot understand the native American problem. They are predominantly blood type O, whereas I am blood type AB. Thus, I really don't understand what their problem is.