Two sets of footage about this kind of thing released in a week:
http://news.bbc.co.uk/1/hi/england/dorse t/8304474.stm
It's not right to say that the mother in the first clip is negligent, btw. Many of my friends have just have kids and they're constantly tired and suffer from concentration lapses shortly after giving birth. The mother here got lucky, but it doesn't make her careless.
As far as I'm concerned, you don't have the right to judge this sort of thing unless you've had kids of your own, and I have a lot of sympathy for the mother in the first clip.
The one I've just linked, on the other hand... Well.