Well, thats interesting statistic ... 20% suffer because of castism . So what percentage accounts for total OBC and SC/ST . What are the rest 80% ? .. is it upper caste ? .. So someone does the discrimination and the rest of the indians suffer because of that ? . The whole issue is the reservation for the elite institutions ... anyways till then there is reservation .. Should the quality suffer ? .. You having studied in a IIT should know how would it be when the class strength is 3 times what it is now ... And this is all because of Govt for which u were proud of ..