Social discrimination is profound in villages where the people are familiar with each other not just by the name. People do not check their citizenship to discriminate. To the people unknown to each other one can pose to belong to be of any caste as long as ones physique doesn't lie. Discrimination at the level which can be avoided by changing surname should be and can be faught in a legal basis. I am stilll thinking over it and can't convince myself. Isn't it like running away from the problem than solving it? Instead of allowing everyone in temple, why do we need to change people's surname first then allow? However, if this workaround is easier to implement and would not cause some other legal and social problem, we may get enough support for this proposal. Let's convince each other now.