Terming religious conversions as the "greatest threat" facing Scheduled Tribes, apart from uenmployment, poverty and illiteracy, he said, "Have you ever seen the rich converting? It is only the poor who do it. The tribals are a simple and emotional people who would be grateful for even a little service and convert.

"The activities of the Christian missionaries is a major challenge as conversions change not only the country's demographic profile but also its unique identity." "Collective conversions are a cruel joke on the poverty of the poor. The missionaries are taking undue advantage of their financial weakness. There should be a blanket ban of conversions," Singh told the valedictory function of the party's Scheduled Tribe Morcha Executive meeting in New Delhi.

He, however, said conversions in "special situations" could be considered. He did not explain such "situations."

The BJP chief said while the party did not believe in discrimination on the grounds of caste, creed, religion and language, "we will not indulge in appeasement to expand the party's base.