[rjbwork]

>Why in the world shoot kids in the first place?

I don't know. I certainly don't think anyone should be shooting kids.

>US is the only country in the whole universe that has an active shooter problem in schools.

Because we have guns that are relatively available and a handful of wingnuts that want to hurt kids.

That said, it is not the only place that has a violence against children problem. Not even the only place with a violence against children in schools problem.

https://en.wikipedia.org/wiki/School_attacks_in_China