The Naujawan Bharat Sabha was founded at Lahore in 1926 by Bhagat Singh, Bhagwati Charan Vohra and others as an open youth organisation, distinct from the underground HSRA that some of the same people ran.
Its constitution required members to have no communal affiliation and to put the organisation before any religious body. Its stated aims were complete independence and a workers' and peasants' republic.
It ran study circles, published pamphlets and organised meetings across Punjab. Durga Devi Vohra, called Durga Bhabhi, was among its most active members and helped Bhagat Singh escape from Lahore after the Saunders shooting by travelling with him as his wife.
The Sabha's insistence on separating politics from religious identity in 1926 Punjab, a province where every political body was already communally organised, is the part of the movement that has been least carried forward.
It was banned in 1930 and its members absorbed into other formations.
It held public meetings with magic lantern slides of revolutionaries and of conditions in the mills, which was the mass medium available, and the lantern nights drew the largest audiences.
Its manifesto was written to be read aloud and circulated in Punjabi and Urdu. Copies survive in the police files, which is where a good deal of what is known about the organisation comes from.
It was banned in 1929. Its meetings, its lantern lectures and its pamphlets are among the few records of what the Lahore student left actually did week to week.