Darwin's works do not mention Jews. Anti-semitism pre-dates Darwin. German Christian Ministers supported the persecution of the Jews.
Nazi eugenics went beyond anti-Semitism to killing the weak and the mentally retarded, among others.
What Darwin did was to lay the “scientific” framework for the notion that man is just part of nature and therefore “nothing special.” If that is true, then killing men is fundamentally no more immoral than killing animals or, for that matter, destroying machines.