I dont know if Hitler was encouraged by historical or religious events. But i was arguing the point that he was encouraged by christianity as other posts pointed to. And the reason i give the connection to evolution is because evolution gives the world no absolutes whereas the Bible says do not murder among other warnings against hate, violence etc. Therefore if Hitler thought in his mind that what he was doing was right, then he was being consistent with "no absolute of standards". No one can claim other wise. But of course the majority are against him because he caused human suffering etc.
As for your one race, one blood question. Well its obvious the Bible teaches we descended from 2 ancestors. Therefore we are all related back to them. And any difference in races is just due to skin pigment, different characteristics etc. Therefore we are all equal. And no man is superior than any other man because one is white and another is black. (Acts 17:26).