Modi's BJP calls for resignation of West Bengal's chief minister

Indian Prime Minister Narendra Modi’s BJP is ramping up pressure on the regional government of West Bengal, in the wake of the rape and murder of a trainee doctor in Kolkata. The party called for the state's chief minister Mamata Banerjee to step down - claiming her administration mishandled the initial investigation. Ishan Garg has more from Kolkata, which has been rocked by protests since the shocking incident.