"They are not irretrievably defective, rather they are irretrievably abandoned."
These defective pseudo-humans have libidos directed toward children, and it very often includes a measure of cruelty....not to mention that they often kill their victims simply to avoid being caught.
Once identified, they should be eliminated from society. You should find some other subject to invoke your superior goodness and forgiveness.
"They are not irretrievably defective, rather they are irretrievably abandoned. They made a choice somewhere along the line and started out on that slope."
They were not abandoned, they left on their own accord down that evil road.