There's no making sense of it because there's no rationalizing the irrational. And making sense of it requires applying principles of morality, and pure evil will never fit into those principles.
However, there is a solution. If I had my way, each of these animals would have his head mounted on a pike in the town square.....
I would be satisfied if they were executed in six months to a year from being arrested. This twenty year plus road to “injustice” is inexcusable. As for the pikes, I agree with your sentiment, but I don’t want to expose kids to it.