The Jallianwala Bagh massacre, also known as the Amritsar massacre, took place on 13 April 1919 when a crowd of nonviolent protesters, along with Baishakhi pilgrims, who had gathered in Jallianwala Bagh, Amritsar, Punjab, were fired upon by troops of the British Indian Army under the command of Colonel Reginald Dyer. The civilians had assembled to participate in the annual Baisakhi celebrations—both a religious and cultural festival for the Punjabis. Coming from outside the city, they may have been unaware of the martial law that had been imposed.
On the Baisakhi day (harvest festival), a public meeting was organized at the Jallianwala Bagh (garden) to support the Rowlatt Satyagraha. General Dyer marched in and without any warning opened fire on the crowd. According to official report 379 people were killed and 1137 wounded in the incident.