But we all know blacks are the only one who take the credit. No other race goes as hard to claim the full achievements of mixed race person as blacks.
It has nothing to do with taking credit for achievements. Historically white folks have looked down upon all non-whites. So minorities have tried to stick together. Why do allot of Asians and Hispanic people subscribe to black culture?
Also in the case of mixed race folks. They have NEVER been accepted by white America. They were shunned as just as bad or worse than black folks. We have always accepted them as out own because that's where society placed them. If you ask those people on your list they will tell you that they are "black" Americans. They acknowledge their white parent, but they also understand where society has placed them.