Yeah, there are a lot of real world parallels she could have used that would have made more sense than segregation or gay marriage. She also fell into the classic trap of using fantasy metaphors to make a didactic film about racism and homophobia featuring straight white characters.

I agree with everything you said, and I think it’s strange that American wizards would have more contact with muggles with their European counterparts. Post-Columbian America has a rich history of people founding new, more insular communities because they didn’t like who they were living with before. 

I think in this situation, the point of view of the depicted community should be most important. If Asian Americans are offended by a movie about Asian Americans, and white Americans aren’t, then it’s probably safe to say that it’s an offensive movie.

That’s a really good question, and I think it comes down to the gap between how characters are coded black in white media, and how black Americans perceive their own culture.