Not complicated. It's just a value thing, I guess.
I take the view that we are a human community of poor, bare, forked animals who should give a damn about each other, no matter what country the other happens to be in and I prize more highly those who do give a damn.
You appear to have different values.
I mean terror shootings because they are clearly meant as acts of terror.
Want to argue about whether 9/11 was a terror act?
There is a pretty clear definition of terror, you know.
One article is suggesting that this is likely to become a popular form of terror because the targets are soft and readily available.