Dissecting the Indian Institute of Technology Madras – APSC Ban issue, what exactly has happened?

There is a lot of fuss going on about a student group called APSC’s (Ambedkar Periyar Study Circle) ban in IIT Madras by the administration. The reason that is being shown in media is such that the decision is taken because the group is conducting anti modi discussions. I studied in IIT Madras for 5 years, I never saw discrimination on the campus based on caste or political outfit which you are supporting to. Okay, so are they discriminating now?