Anti-corruption activist Anna Hazare, who is 74, will start a lengthy fast on July 29. Anna will join his aides like Arvind Kejriwal and Manish Sisodia, who are launching an indefinite hunger strike tomorrow to protest against the government. "The aim is to campaign for a Lokpal Bill...the government is only giving us assurances, but takes no action," Anna said, referring to the anti-graft legislation that has been his movement's raison d'etre.