Survivors of the 1984 Bhopal gas leak tragedy and activists shout slogans as they burn an effigy symbolising Dow Chemicals outside the Dow Chemicals office in Noida, around 40kms from New Delhi, on Thursday. Three thousand seven hundred people died immediately in the world's worst industrial disaster in 1984 when gas leaked from a pesticides plant owned by the U.S. multinational Union Carbide in Bhopal. Photographer: AFP / Manan Vatsayana
