Vanchit Bahujan Aghadi chief Prakash Ambedkar said the Centre's National Population Register exercise was an "evil design" aimed at ferreting out information about the caste and ideology of people in the country. The Centre had, on December-24, approved Rs.3,941.35-crore for updating the National Population Register. "The motive of the government is to get caste and ideology information of every family," Mr Ambedkar told reporters.