1. Non Cooperation Movement, 1920-22 Mahatma Gandhi launched the Non Cooperation Movement in protest against the Jallianwala Bagh massacre in Amritsar and the infamous Rowlatt Act.
Millions of Indians participated in the movement which called on students to leave Raj-sponsored schools and colleges, lawyers to boycott courts, soldiers to desert the army, and people to stop using British goods.
The movement ended after the Chauri Chaura incident in which 22 policemen were burnt inside a police outpost by a violent mob.
Gandhiji called off the movement because it was turning non-violent.