Sorry, but when terrorists begin to purposely target innocent civilians, they've removed themselves from "civilization," and are no longer privy to the rights or protection of the civilized. What's even worse, we (and the Israeli's) have hamstrung our military by putting what I consider criminal (on the part of politicians) rules of engagement on our military, to the point of telling them they're not allowed to shoot back while under fire! And then prosecuting (persecuting being a better word) our military?
The simple fact is that once Israel stopped brutally pursuing and killing the terrorists, the terrorists saw this as weakness and stepped up their attacks. And during that time, the world decided that it liked Jews a lot better when they were the innocent victims with bodies stacked up like cord wood than people who were willing to defend themselves.
That is the key to understanding barbarians.
Also, today's "progressives" are just a juvenile form of barbarian that are still maturing, but they know to step up their attacks in the face of our moral/cultural/political weakness.