1) The Meerut Conspiracy Case of 1929, was, perhaps, the most famous of all the communist conspiracy cases instituted by the British Government.
2) The late 1920s witnessed a number of labour upsurges and this period of unrest extended into the decade of the Great Depression (1929-1939).
3) Trade unionism spread over 'to many urban centres and organised labour strikes. The communists played a prominent role in organising the working class throughout this period.
4) The Kharagpur Railway workshop strikes in February and September 1927, the Liluah Rail workshop strike between January and July 1928, the Calcutta scavengers' strike in 1928, the several strikes in the jute mills in Bengal during July-August 1929, the strike at the Golden Rock workshop of the South Indian Railway, Tiruchirappalli, in July 1928, the textile workers' strike in Bombay in April 1928 are some of the strikes that deserve mention.

1) The H.S.R.A was a renewed chapter of the Hindustan Republican Association.
2) Its aim was the overthrow of the capitalist and imperialist government and establish a socialist society through a revolution.
3) The H.S.R.A involved a number of actions such as the murder of Saunders in Lahore.
4) In that, Saunders was mistaken for the Superintendent of Police, Labore, James A. Scott who was responsible for seriously assaulting Lajpat Rai, in December 1928, and Rai's subsequent death.
5) They also made an attempt to blow up the train in which Lord Irwin (Governor-General and Viceroy of India, 1926-1931) was travelling, in December 1929, and a large number of such actions in Punjab and UP in 1930.