Gandhiji gave a call for a mighty hartal on 6 April 1919. The people responded with unprecedented enthusiasm.
The Government decided to meet the popular protest with repression, particularly in the Punjab.
An unarmed but large crowd had gathered on 13 April 1919 at Jallianwalla Bagh to protest against the arrest of their popular leaders, Dr. Saifuddin Kitchlew and Dr. Satyapal.
Jallianwala Bagh (located in Amritsar, Punjab) was a large open space which was enclosed on three sides by buildings and had only one exit.
General Dyer surrounded the Bagh (garden) with his army until closed the exit with his troops, and then ordered his men to shoot onto the trapped crowd.
They fired till their ammunition was exhausted. Thousands were killed and wounded.
After this massacre, martial law was proclaimed throughout the Punjab and the people were submitted to most uncivilized atrocities.