Mahatma Gandhi suspended the Non-Cooperation Movement after the Chauri Chaura incident in 1922.
On 4 February 1922, a crowd of protesters in Chauri Chaura, in the Gorakhpur district of the United Provinces, clashed with police. The crowd attacked and burned the police station, killing 22 police officers. The violence deeply disturbed Gandhi, who believed that a mass movement had to remain firmly nonviolent.
Although the incident was local, Gandhi treated it as evidence that the wider campaign was not yet sufficiently disciplined. He called off the national Non-Cooperation Movement soon afterward, a decision that disappointed many supporters who wanted the pressure on the colonial government to continue.
Chauri Chaura is sometimes confused with Amritsar, the site of the 1919 Jallianwala Bagh massacre. The two events were different: Amritsar intensified anti-British anger, while Chauri Chaura prompted Gandhi to halt his movement.