Were this true, we wouldn’t be discussing it. This is not an issue from hundreds of years ago, this is the reality lived by more than a billion people every day. There are places where attacks from feral dog packs are a present concern (example, example), there’s countless reports about this it truly is not difficult to verify. How would you approach this, if you had less than $2.15/day to survive on? A thrown rock is a great deal more effective at addressing the problem than even the most fervent moralizing.
I’ve faced a lot more hardship than you
The playgrounds I grew up on could only be visited while armed guards were there. That many children in once place made too tempting a target to be left otherwise unprotected.
Gee, I wonder how ya’ll got those vaunted standards. Weird. Could have been just about anything, couldn’t it.
Seriously, the US has a lot of our own shit to get together, but lets not throw too many stones over the moral superiority of european countries either. Especially right now, in the face of the growing influence of far-right parties across the, ahem, “civilized” world. The US is a whole omnibus of cautionary tales right now, it might be worth hearing one or two of them out instead of going directly to “unbelievable cliche”.