Ever heard of rabbinical yikhes? The theory is not so strange to you or to others more informed than yourselves, who have. And think about caste systems in other religions, but don't forget ours: Cohen, Levi and Yisrael. The difference with the Nazis lies in their wholesale murder - extermination, as they put it - of those they deemed below par.
U.S. asks Uzbekistan to join anti-ISIS coalition (Reuters)
from the article: In his diary, Mengele predicted 90% of humans would die of stupidity