Marleyji,

Just look for how Buddhism failed Dalits in India you will find a lot of interesting information. Now mind you, it's not the fault of the religion itself. How could there be fault  in the Great Buddha who never said he was god and showed the world path to Nirvana? It's the people who follow him. Just because somebody converted to Buddhism or any other religion for that matter they will not be "egalitarian", "peace loving" overnight. People carry their cultural baggage. How do you expect centuries old tradition to just vanish instantly after conversion?

And how would mass relocation work? Won't they carry their baggage with them wherever they go? And remember even within "dalits" there exist caste system. Won't it have followed them wherever they went?

There are a few lucky people though.Several times in Nepal, a single person or a family moves to a new location and says that he/they are brahmins or chhettris. Interestingly, you can find several same last names between brahmins and "damai"/"kamis" like Ghimire, Regmi etc. Since this/these people are in a new place and do not have any evidence to tie them to their old location, they get away with it. I say good for them!! Finally they were able to get rid of their shackles!