Not like certain people living in certain countries, who were, it was said, as human as anyone else; who were said to be sapient beings, worth more than any mere unicorn. But who nonetheless wouldn't be allowed to live in Muggle Britain. On that score, at least, no Muggle had the right to look a wizard in the eye.

I was surprised by that passage. If anything, it seems magical Britain is more exclusivist. Magical Britain only invited Hermione in because she's a British witch. The 99.9% of people who are born muggle are excluded completely. I also don't get the impression that foreign born wizards/witches are automatically invited to Hogwarts. So they are magic-nationalists as well.

They even forbid beneficial muggle-wizard trade, which probably results in the deaths of millions of muggles.