The Jallianwala Bagh massacre took place on 13 April 1919. The Acting Brigadier-General Reginald Dyer ordered troops of the British Indian Army to fire into the unarmed crowd. A total number of 379 people died and over 1,000 people injured.
With the observance of the All India Flag Day on June 18, 1923, the Jhanda Satyagraha assumed national complexion with Nagpur as its headquarters and “Nagpur Chalo” as its slogan.