Another kind of blood made a person noble and pure. And, according to Hitler, the highest type was the Aryan blood of the German race. In fact, neither skin color nor race determines these qualities. There are good and bad people among all races. And blood has little to do with race.
All blood types exist in almost all races.
The error becomes clear if we consider the case of the American Negro. Nothing seems plainer than the fact that he is a member of the black race. Similar is the case of the Jew. Strictly speaking, all blood types are found in all races. In fact, it became dangerous to disagree with the Nazis about racism.