Explanation:

Naujawan Bharat Sabha (NBS, sometimes spelled Nau Jawan Bharat Sabha, with the acronym NJBS) (translation: Youth Society of India) was a left-wing Indian association that sought to foment revolution against the British Raj by gathering together worker and peasant youths. It was founded by Bhagat Singh in March 1926 and was a more public face of the Hindustan Republican Association.

The NBS comprised members from the Hindu, Muslim and Sikh communities and organised lectures, public meetings and protests. It did not gain widespread support because of its radical ideas relating to religion and to agrarian reform. Attendance at its public meetings became particularly poor after the killing of J. P. Saunders in late 1928. This killing, by Singh and others, followed from a protest against the Simon Commission in Lahore of which the NBS had been one of the organising parties. Contemporary opinion was that non-cooperation was preferable to violence as a means of achieving change.

The association was banned in 1929 during a period when the government had imposed Section 144 to control gatherings as public support burgeoned for the imprisoned Bhagat Singh and his fellow hunger-strikers.