In China, toddler left for dead sparks debate about society's moral health

When I was in China I saw a cyclist go head first through the windshield of a van. While their driving probably isn't the worst of any country, the cars are horrifically unsafe and traffic patterns are erratic at best. I think what it comes down to is that seeing a kid get run over isn't especially surprising to anyone, and since the kid was already almost certainly dead or about to die no one really cared. I don't think it's just an issue of the liability.

A good analogy would be in NYC the reason they built the high line was that in the 1820s literally at least a dozen kids were getting run over by the train every single week. No one cared because everyone was poor and life was cheap, and a good day was one where the local neighborhood gang didn't try to douse you in gasoline and light you on fire for entertainment.