I have lot of evidences.
Anyway, I think we are deviating from the topic "Mauryan empire".
Even in the historical research on "Mauryan empire", read the books Vincent Arthur Smith, K A Nilakanta Sastri, Bhandarkar and Romila Thapar, you can find out how the Jain and Buddhist contexts have been used to interpret with anti-Brahminic attitude.
Anyway, if you want, we can have a separate entry with instructions to the posters that they should come out with criticism and argument based on facts or evidences. In fact, I have already challenged earlier to come out with evidences for a debate.