Hindu devotees sever a buffalo calf's head as part of a sacrifice, during the 'Durga Puja' religious festival in the eastern Indian city of Kolkata October 1, 2006. The Durga puja festival is one of the most popular for Bengali Hindus, who believe that the goddess Durga symbolises power and the triumph of good over evil. BEST QUALITY AVAILABLE REUTERS/Jayanta Shaw (INDIA)