Adolf Hitler worked out an “evolutionary ethic” in Mein Kampf (1924). Applying Darwin’s principle of natural selection of the fittest to human ethnic groups, Hitler concluded that since evolution has produced the superior (Aryan) stock, we must work to preserve it. Likewise he believed that inferior breeds must be weeded out. On this basis he killed six million Jews and about five million other non-Aryans.
Christian Ethics: Contemporary Issues and Options