I think one thing with Sweden is that in some way the Swedish society is a very good society, almost perfect on the surface. That is something that makes the writers forced to see what is underneath the surface, because it's always something underneath the surface, of course.
We have three daughters, our own. And, of course, there's nothing more frightening than something bad happening to them. And also, the thought of our children turning bad in some ways is another frightening thought.