Raj is not doing anything wrong as far as poltical move is concerned.DMK and AIDMK is using it very successfully in south(Dravidians v/s aryans).Mayawati is using dalit card very effectively.So is Samajwadi party and RLD(yadav and muslim votes).The real problem lies in Indian constitution which has given rise to vote bank politics of divide and rule and Our constitution has hardly been upgraded since independence since it came to existence.