BY A STAFF REPORTER: The BJP has called for a 'Nabanna Chalo' campaign on Tuesday. Meanwhile, there are allegations that BJP workers are being prevented from participating in the programme in the district. Meanwhile, clashes broke out between BJP workers and police outside Raniganj railway station. The BJP workers left for Kolkata on this day. However, they were reportedly stopped by the state police. Several activists have already been detained by the police. Watch the video...