The kid that did the shooting wasn’t an enemy of anyone, was he? I think that Israel just has different kids than we do in the US, as do a lot of countries.
Adam Lanza was 20, not a kid. But, the issue is that HE wasn't an enemy of anyone, he considered those children and that school to be HIS enemy.
It's not a matter of playing word games, it is a matter of perception. Adam's mother voluteered at the school and spent a fair amount of time with those kids. Adam had been home schooled from about the 8th or 9th grade (I think), but saw his mother constantly going to Sandy Hook to volunteer her time with those children.
As a result, Adam didn't believe that his mother was spending as much time with him as he needed her to. This caused an anger to build in him toward a building and its occupants. He wasn't going after anyone in particular at the school, he was trying to kill a THING that he believed was robbing him of his mother's love. Those children and teachers simply became the faces of the thing he was trying to kill. This is how a mentally disturbed person sees these types of situations.
When we compare that to what is happening in Israel, the Arabs surrounding Israel are trying to destroy Israel and everything that represents or is a face of Israel to them. This includes destroying Judaism which, for the most part, goes hand in hand with Israel. So, we can see a parallel between Adam Lanza and the Arabs because both are trying to eradicate something that the believe represents a threat to them. Adam believed that the kids were a threat to his mother's love for him, the Arabs believe that Israel is a threat to their security (when the truth is the exact opposite - but don't ever try to confuse an Arab with facts!). Israel, in essence then, represents a THING to the Arabs that must be destroyed just as The school and its occupants represented a THING that Adam Lanza needed to destroy to regain his mother's love.