information on castes was included Cause_to_be_included in the census following demands Request from several ruling coalition leaders including lalu prasad yadav , sharad yadav and mulayam singh yadav supported by opposition parties bharatiya janata party , akali dal , shiv sena and anna dravida munnetra kazhagam .

It was conducted Action in Kerala in 1968 by the Communist government under E M S Namboodiripad to assess Scrutiny the social and economic backwardness of various lower castes .

It also significantly changed Change ethnic castes as well as reducing Cause_change_of_position_on_a_scale the power of many of the local rulers ( `` raja '' ) .