> I do know that japan's last "miss japan" was biracial
Yes, and America doesn't have any race issues since the current president is biracial.
I believe Trump to be deeply racist, and I recognize a fiercely racist strain of his followers. But those people also make great television. I think Trump's followers are willing to abide racism, because the alternative is a status quo that promises hopelessness for their children. I don't condone racism and I think the mainstream middle-aged Trump base will eventually be ashamed to tell their grandchildren they supported Trump --- but that's because they have a moral core that does not accept racism.
I do not believe you can make the same generalization about Japanese society --- or about many other societies in the world! It's a sign of the health of our culture that we so openly confront our racism.