I believe Christian missionaries attracted hindus by saying that christianity doesnt have caste system, so by converting to christians caste system will be destroyed. But lot Christians in Tamilnadu are still deep rooted with their castes, for example when they look marriage alliance they look based on caste. For example, Christian Pillai looks for alliance with another Christian Pillai. Now where does their principle go.
Reservation should be based on the family income and not based on the caste.