RG Kar protest: Students' Nabanna march turns violent as police-protesters fight pitched battles; over 200 held
Kolkata: A protest march to West Bengal state secretariat Nabanna against the RG Kar rape-murder of a trainee doctor turned Kolkata into a battleground on Tuesday as police and mobs of students and demonstrators faced off at multiple locations on the route to the administrative building in Howrah that houses the office of Chief Minister Mamata Banerjee.