“What is happening to our civilization?”
In this case it’s probably just a coyote or a raccoon taking advantage of some easy prey.
And even if it is a person doing then the solution is simple: Keep your cat inside and you won’t have to worry about it.
I’ve just never understood the mentality of cat owners who think their cats have a right to wander around a neighborhood, fight other people’s cats, kill the birds in other people’s yards, and then spray and crap in the sandboxes of every little kid.
I like other people’s cats. But I like them much more when they’re not on our property.
Build a wall. :)