What about this sort of evil?
Eugenics is an example of what happens when politics misuses science, not that science is evil.
The truth is, both religion and science have been used as an excuse to destroy the hated other.
Sadly, the practice of weeding out the unfit goes back to ancient times. One thinks of the Greeks exposing their children, or of Spartan military training, where only the fittest survived boyhood.
And sadly, the practice of exterminating whole families, tribes, nations & races goes back to the beginnings of history, if not before. Technologies & ideologies change, but the results were the same.
Mankind didn't need Darwin to practice evil.
Sparta.