At the launch of season 5 of NDTV-Dettol Banega Swachh India, Campaign Ambassador Amitabh Bachchan urged people to fight against poor hygiene, sanitation and air pollution. He said, our main aim is to make India free from the practice of open defecation by October 2019. From being vocal about swachhta to inculcating civic sense among people, here are the top five influential quotes from what Mr Bachchan, said during the launch of the new season of this five year campaign.