Hindustan Socialist Republican Association

Hindustan Socialist Republican Association (HSRA), previously known as the Hindustan Republican Army and Hindustan Republican Association (HRA), was a left-wing Indian revolutionary organization, founded by Sachindranath Sanyal. After changes in Bhagat Singh's ideology and the influence of the Russian Revolution, they held meetings in Feroz Shah Kotla Maidan and added the word socialist to their name.

Source: Wikipedia — Hindustan Socialist Republican Association (CC BY-SA 4.0)