"That's fine, but the people who were and are in favor of eugenics and the Holocaust definitely pointed back to Darwinism as part of the justification of their ideas."
As far as Matthew 7:21 - I was not making a case that Hitler was or was not a true Christian. It was to show that if someone tries to assign blame to Darwinism for Hitler's atrocities, then it is equally valid to assign blame to Christianity.
Cheers!