This may sound callous, but it is a common sight here in India. When I was living in a hostel in New Delhi, India's capital, I had to travel by train frequently as I had to spend all my vacations in my home town about 250 kms (156 miles) away.
Just before entering New Delhi's railway station, there are a lot of slums. The plight of the kids there was abysmal. With the barest minimum clothing covering their privates, (some weren't even that fortunate) these kids roam on the tracks.
Similarly, here in Chandigarh too we have slums (infact, they are present in each city of India) and the sight there makes my heart cry out in pain.
The BeaStKid