The Chauri-Chaura incident took place on February 4, 1922, at Chauri Chaura in the Gorakhpur district of the United Province (modern-day Uttar Pradesh) in British India. During the Non-Cooperation Movement, a large group of protesters clashed with police, who opened fire. In retaliation, the demonstrators attacked and set fire to a police station, killing all of its occupants. This act of violence led Mahatma Gandhi to call off the Non-Cooperation Movement.