People don't get to define whether they are a race or not themselves. If they could, racism would be gone.

You cannot controll whether a Nazi views you as a race or not.

Personally I think the race concept is completely idiotic and makes no sense. Yet I cannot deny the existence of racist pseudo science and Nazism. It is there an whether it makes sense or not it still has the potential to cause a lot of harm.

There is no clear distinction between race and ethnicity. Racism also includes discrimination against people due to their ethnicity.

If a racist thinks an ethnic group is genetically different, then ethnicity also becomes a race in that context.

It isn't about what (or who) you are but about what people think you are. Unfortunately...