The agitators under the aegis of Pension Parishad raised a call to scrap the difference between APL and BPL citizens and offer pension as a universal right to living, among other demands.
Addressing the protesters, activist Aruna Roy accused the the government of playing with the MNREGA scheme and trying to put the weight of corruption on the poor.
"The government says they want to end MNREGA (Mahatma Gandhi National Rural Employment Guarantee Act) as it is becoming a source of corruption. It is the officers who do corruption so why should the poor bear the brunt of it. We, therefore, demand that this APL-BPL divide should be dissolved and universal pension scheme be employed," Roy said.
The Pension Parishad is demanding Rs 2000 a month pension for all senior citizens, abolition of the APL-BPL divide and granting of universal ration and pension, minimum 100 days of work for each citizen in villages under MNREGA and right to work for urban poor among other demands.
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CPI National Secretary and Rajya Sabha MP D Raja pledged full support to the cause and assured them that he will raise the issue in Parliament.
Economist Prabhat Patnaik too joined the protest and termed universal pension as a basic right and not some "favour by the government".
"This fight is also for rights - of pensions, of education, of employment of health, among others. APL-BPL divide should be ended and every Indian should get sufficient pension," Patnaik said.
Protesters had come from places like Pune, Kolhapur in Maharashtra, Muzzafarpur and Araria districts in Bihar.
Traffic was disrupted on Parliament Street here due to the protest.