He hopes to pass an anti-corruption bill though this has so far been blocked by bickering in parliament.
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Mr Hazare's protest is aimed against what he regards as a watered-down anti-corruption bill introduced by the Indian government.
Mr Hazare says the government's proposed anti-corruption bill is weak and wants his own tougher version to be passed by parliament.
Indian Prime Minister Manmohan Singh has accused Mr Hazare of trying to circumvent democracy by demanding the overhaul of an anti-corruption bill.
Indian Prime Minister Manmohan Singh has told leaders of political parties that he is committed to finding a consensus on an anti-corruption bill.
In April Manmohan Singh's government caved in to another hunger-striker, Anna Hazare, who extracted a big concession, winning for his supporters a right to co-draft an anti-corruption bill.
In late 2011 Ms Banerjee failed to support both the central government's plans to let foreign supermarkets into India and its latest attempt to pass an anti-corruption bill.
Meanwhile the government introduces a toothless anti-corruption bill in Parliament.
It is also difficult to ignore the fact that unless Mr Hazare and his spirited bunch of aides had not kicked up a storm over a strong anti-corruption bill, India's politicians would never have moved on it with the alacrity they have demonstrated in the past few months.
Recently, Ms Banerjee has opposed Congress on a number of key issues, including petrol price rises, water sharing treaties, retail reform and the anti-corruption Lokpal bill.
India's cabinet has approved some key changes to the controversial anti-corruption Lokpal bill suggested by a committee of MPs from the Rajya Sabha, the upper house of parliament.
Many commentators believe that the chaos leading to the adjournment of the anti-corruption Lokpal bill was orchestrated by the ruling party, something opposition parties have also alleged.
Talks with anti-corruption campaigners on drafting a strong ombudsman bill have reportedly run into difficulties with the government reluctant to include the prime minister's office under the purview of the law.
Over the next four months, the group holds several rallies and press conferences to demand the setting up of an independent anti-corruption authority through the passage of a suitable bill (known as the Lokpal Bill) in Parliament.
This must be good news for anti-corruption campaigner Anna Hazare who believes that the Lokpal bill was "weak and useless" anyway.
Leading anti-corruption campaigner Anna Hazare has been campaigning for a strong bill to be passed in parliament.
Leading anti-corruption activist Anna Hazare, who has been campaigning for a tough Lokpal bill, has called the amended bill "a farce".
The zesty and popular anti-corruption campaigner Anna Hazare has effectively put it on the mat with his demand for a strong anti-corruption law, on which the party has flip-flopped embarrassingly before tabling what many say was a patchy bill in the parliament last week.
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