For 24 hours and more, students of Kolkata's Jadavpur University have gheraoed the vice chancellor demanding he join their fight against the state's decision to ban politics on campuses. The West Bengal Universities & Colleges (Administration & Regulation) Act passed in February and a notification in June say no more political students' unions, only apolitical councils. The model is Kolkata's best known Jesuit college and St Xavier's, which chief minister Mamata Banerjee has approved.