Before I comment on these, can you elaborate on the solider, the lawman/woman, the priest/priestess, and the physician?
The physician I think I understand, but I'm trying to understand your logic.
If you're concerned about the dead children, keep in mind that it is a metaphor. What I can say is the the child in each represents the self. They are that person's individuality, free will and humanity, everything that makes them a person. Any adults present collectively represent other people. The iron hand present in all of these... really doesn't need an explanation, does it? It's an iron hand, it's a stock metaphor. Since it's subtle, I can say the rod represents religion (there's a biblical basis for using a rod to represent religion) and that the heart-shaped boxes represent the "heart" or "soul." I can also say that "metaphor A is metaphor A." If something represents one thing in one symbol, it represents the same thing in all of them.
From this, you should be able to figure the rest out.