NEW DELHI (AFP) - Indian protester Anna Hazare, whose campaign in August for a new anti-corruption law galvanised millions, threatened on Tuesday to start another hunger strike unless his demands are met. The 74-year-old activist wants a new law passed by the end of the winter session of parliament on December 21 that would create a powerful new ombudsman able to investigate and prosecute public servants. "I will begin my hunger strike on the last day of the winter session of the parliament if it fails to pass an effective Jan Lokpal bill," Hazare said in the letter written to Prime Minister Manmohan Singh.