Ancestry and heredity are a big part of class in Britain (and some other cultures with a strong class or caste element) but are not about race.
This is true, and the blood-purity issue is not entirely analogous to race. But Rowling went to quite a bit of effort to line her bad guys up with the Nazis. (Grindelwald ended up imprisoned in a place called Nurmengard, even!)
Ancestry and heredity are a big part of class in Britain (and some other cultures with a strong class or caste element) but are not about race.
This is true, and the blood-purity issue is not entirely analogous to race. But Rowling went to quite a bit of effort to line her bad guys up with the Nazis. (Grindelwald ended up imprisoned in a place called Nurmengard, even!)