On 25 December 1925 a communist conference was organised in Kanpur.
500 persons took part in the conference.
The conference was convened by a man called Satyabhakta.
The conference adopted the name ‘Communist Party of India‘.
Groups such as Labour Kisan Party of Hindustan (LKPH) dissolved into the unified Communist Party of India.
The name of the party changed to Workers and Peasants Party of Bengal on 6 February 1926 at conference in Krishnanagar.
After the conference the underground Communist Party of India members joined the provincial Workers and Peasants Party of Bengal to carry out their activities.
Workers and Peasants Party of Bengal became the face of the communist movement, which was declared illegal.
M.N. Roy in this period opposed nationalism in India and argued that India was not ready for socialist revolution.
M N Roy, Muzaffar Ahamed, S A Dange, Shaukat Usmani, Nalini Gupta, Singaravelu Chettiar, Ghulam Hussain were caught by the Government and were trailed for conspiring against the Government.
This case was responsible for introduction of Communism to the Indian Public.
In this case, M. N. Roy was charged in absentia, so he was not arrested.
Rest all people were arrested and sent to jail for 4 years.