"Even a superficial glance is sufficient to show that all the innumerable forms in which the life-urge of Nature manifests itself are subject to a fundamental law - one may call it an iron law of Nature - which compels the various species to keep within the definite limits of their own life-forms when propagating and multiplying their kind. Each animal mates only with one of its own species."
"This urge for the maintenance of the unmixed breed, which is a phenomenon that prevails throughout the whole of the natural world, results not only in the sharply defined outward distinction between one species and another but also in the internal similarity of characteristic qualities which are peculiar to each breed or species. The fox remains always a fox, the goose remains a goose, and the tiger will retain the character of a tiger. The only difference that can exist within the species must be in the various degrees of structural strength and active power, in the intelligence, efficiency, endurance, etc., with which the individual specimens are endowed."
I suppose you could spin this as just a little misunderstanding of Darwin. It's certainly no further from Darwin than the understanding displayed by the current crop of anti-evolutionists.
But if evolution corrupts, then the depth of one's corruption should be correlated with the depth of one's knowledge of evolution.
Let's do a study comparing the rate of conviction for child molestation between biology teachers and clergymen.
Atheism is responsible for the mass murder of more human beings in the 20th Century alone than all deaths by sectarian violence in the preceeding 2000 years.