The Tragedy of Sandy Hook- All over again

[Schroeder]

Originally Posted by Jimbuna

I find it hard to understand what makes people that carry out these tasks tick

Propaganda!
Single word answer.
If you feed people enough propaganda and brainwash them enough to believe that they're working for a higher being then they'll pretty much do anything. It doesn't even necessarily have to be a religion/god. I guess we've shown that pretty well a couple of decades ago...