I have to admit I have become rather desensitized to this as well. Not to the suffering of the victims, that still enrages me. But if this is supposed to terrorize me , it isn't. If someone went jihidi close to me in a mall or something, I would try to put them down with no thought whatsoever. I would have more trouble putting down a dog.
After killing that guy, then search out the family. I've been saying since 9/11 to buy all the hardware and ammo you can afford. You can all see that it was not a joke.