People from India's northeastern states sit inside a train bound for the Assam state at the railway station in Kolkata August 18, 2012. Indian Prime Minister Manmohan Singh assured migrants from the northeast that they were safe as thousands fled Mumbai, Bangalore and other cities on Friday, fearing a backlash from violence against Muslims in Assam. REUTERS/Rupak De Chowdhuri (INDIA - Tags: TRANSPORT CIVIL UNREST SOCIETY)