"Do you have any sources to suggest what these Buddhist actually call themselves? They call themselves Dalits for all I know".
I have the vociferous complaints of the editors on this very talk page who self-identify as Buddhist, for one.  Please read the entire talk page, I'll be happy to provide as many diffs as you like if you choose not to. For more sources, there are several websites devoted to this.  While they can't be used in the article, they certainly can be used to clear up this point.
 "Moreover I know my Wiki conventions far better than you. It is also not Wikipedia's mission to serve as a PR source"
What I do and do not know is arguable, and remains to be seen. I'm certainly not advocating that Wikipedia or this article become a PR source, either for the movement itself or for those who oppose them."Firstly, Buddhism never died in India".
I quite agree with you, if the internet is any indication. I've found 45 different Buddhist groups of varying strength in a directory aimed at listing Buddhist groups throughout the world (on a side note, I plan to contact as many of these groups as I can, for a seperate matter). That was just a cursory bit of research, and not aimed at that particular assertion.  I'm sure more energtic research will reveal more.
"It's a non-issue, and the discussion should end here. statements such as these show your unwillingness to debate and discuss the issue at hand. Anti-thetical to cardinal Wiki covention!'"
Since we have a difference of opinion, I suggest that we let an admin sort it out, and you're free to seek one of your own choosing if you so desire. However, I'd like to point out that an admin (Blnguyen) has asserted the exact same thing on this very talk page. Again, please read the entire talk page, it's much appreciated.