Horrifying. Disgusting. Infuriating.
I've had random people off the side of the street help me if I even resembled being in distress, and I'd probably be dead or worse without the altruism of random passerbys. I know for a fact that I wouldn't be able to continue living with myself if I saw this and did nothing. The people who didn't help should all burn in hell.
And to think that the mom let the kid walk around before she learned how to look out for cars makes it almost entirely the mom's fault. I mean the kid was alone for THAT LONG? WTF? Children who obviously don't know how to watch out for cars need to be watched like a hawk until they can do so. This is why.
Oh, and Ani, I hope your comment about wishing dead on the kid for being in a bad situation was a poor attempt at a joke. Otherwise, you might as well just go vigilante and kill all children with shitty parents, and then yourself.