Here is a clip from HBO's VICE episode 5 about workers in Mumbai. http://www.youtube.com/watch?v=jc9vOnAPrr4
What the full episode shows is the trophy skyscraper mansions that billionaires there are building. Talk about income disparity. BTW, I've been to Mumbai and can confirm it is the most polluted place on earth and a good place to send climate change deniers for a couple weeks.