The 1984 Bhopal gas tragedy victim Rashida Bee, centre, handing over the petitions containing more than 11,000 signatures protesting the Dow Chemical's sponsorship of the 2012 London Olympics to Indian Olympic Association President Vijay Kumar Malhotra, right, in New Delhi on Wednesday. Dow Chemical bought up Union Carbide, the firm responsible for the Bhopal gas leak that killed thousands. PTI Photo