Neo-Nazis and the Christian Identity churches are the two pillars of current white supremacy ideology. Neo-Nazis expand Hitler’s myth of a biologically pure group called Aryans to claim that white Europeans represent an evolutionary superior class of beings, Jews excepted. They purport to use science for proof, but the scientific community rejects their claims. They attract followers by telling white people they are superior to and of greater worth than others. When the true findings of biology, in particular genetics, are ignored in our religious training and rejected by our traditions, the church lacks the tools to counter that attraction.

Christian Identity emerged out of Protestant Fundamentalism by two flights of biblical imagination. The first idea is that Jews are the descendants of Cain, who they assert was the product of an illicit relationship between the devil and...