Such a complete lack of natural affection toward our children is incomprehensible to most of us. It is natural to love them, care for them, protect them. I realize that such things have happened throughout history, but when I read this, I immediately thought of this passage in the NT.

This know also, that in the last days perilous times shall come.
For men shall be lovers of their own selves, covetous, boasters, proud, blasphemers, disobedient to parents, unthankful, unholy,
Without natural affection, trucebreakers, false accusers, incontinent, fierce, despisers of those that are good,

2 Tim 1:1-3

Sorry if I seem preachy. Such cruelty offends good people of all faiths. I just happened to think of this passage I had read years ago.