2015, a representative of UNICEF India congratulated the government for making Nadia the first Open Defecation Free district in the country. In a statement on 17 October 2012, Banerjee attributed the increasing incidence of rape in the country to "more free interaction between men and women". She said that "Earlier if men and women would hold hands, they would get caught by parents and reprimanded but now everything is so open. It’s like an open market with open options." She was criticised in the national media for these statements. She was also instrumental in the rollback of the petrol price hikes and the suspension of FDI in the retail sector until a consensus is evolved. In a bid to improve the law and enforcement situation in West Bengal, police commissioners were created at Howrah, Barrackpore, Durgapur-Asansol and Bidhannagar. The total area of Kolkata Municipal Corporation was brought under the control of the Kolkata Police. Banerjee had shown a keen interest in making the public aware of the state's history and culture. She named several stations of the Kolkata Metro after freedom fighters, and plans on naming upcoming stations after religious leaders, poets, singers and the like. Mamata Banerjee has been criticised for starting controversial stipends to imams (Iman Bhatta) which was ruled unconstitutional by Calcutta High Court. On 16 February 2012, Bill Gates, of the Bill & Melinda Gates Foundation, sent a letter to the West Bengal government praising Banerjee and her administration for achieving a full year without any reported cases of polio. The letter said this was not only a milestone for India but also for the whole world. In June 2012, she launched a Facebook page to rally and gather public support for A.P.J Abdul Kalam, her party's choice for the presidential elections. After he refused to stand for the second time, she supported Pranab Mukherjee for the post, after a long tussle over the issue, commenting she was personally a "great fan" of Mukherjee and wishing that he "grows from strength to strength". She is against calling bandhs (work stoppage) although actively supported them when she was in opposition. Her tenure was also heavily marred by the Saradha Scam – financial embezzlement which led to the imprisonment of Madan Mitra – a former minister in her cabinet, Kunal Ghosh – a party MP, and rigorous grilling of several party men holding important posts. Second term, 2016–2021