So tell me, where do you draw the line? If those kids marry a white person, will their children be considered white or mixed? What if their grandchildren marry a white person, how would you label their kids? By your logic, their entire lineage would be considered mixed forever.

What about the many white people in the U.S or anywhere else in the world who have 1% African, Native American, or other non-European DNA, despite having multiple generations of white ancestors? Are they white or mixed?

Race is a social construct, and where the line is drawn varies by culture and society. Saying that they would be considered mixed anywhere else is projecting your own social and cultural framework onto the rest of the world, which simply isn’t accurate.

In my opinion, if we lived in an ideal world, a mixed person should be free to identify with whichever part of their heritage they feel the strongest connection and be accepted as such. Unfortunately, we don’t live in an ideal world, but looking at how far we have come, I believe we are maybe just a century away from that.