It's really hard to imagine what a tiny newborn could do to get you this mad ---- not that it's better to beat a 2 year old --- but at least they're old enough to sass and show defiance.
Crying. He/she was annoyed with the baby and all that mattered was his/her own comfort (silence). For people that would do such a thing, it is all about them.
All newborns do is cry,often loud,and often for a long time but any parent with a brain knows how to handle this,
I cannot even imagine anyone harming these poor little souls.
Now 13 year old girls and 16 year old boys is another story.LOL