So you consider murdering children to be a good thing if they're in the wrong place?
How can you people live with the evil in your hearts?
With the exception of a few true pacifists, everybody considers murdering children who happen to get caught in the crossfire, a good thing. That is to say, they have no objections to it. Occasionally, they are unhappy with which particular children it happens to be, but nothing is every done to prevent it from happening again.
Are you claiming these particular Israeli children have some special sanctity and they deserve to be treated differently than all the other children who died in a political conflict?
We(Americans) lost 22 children in a school, because a mentally ill person had access to an assault rifle. This was a clearly criminal act, with no political issues at all. Even then, we did not change anything as a result of their deaths. Nothing.
I think you are asking a lot from people, if you expect them to do something different, just because you told them about your dead school children.