Step 1: Concept Identification:
The inquiry concerns a critical juncture in India's fight for independence, specifically an instance where Mahatma Gandhi halted a nationwide protest due to a violent occurrence that contradicted his fundamental principle of non-violence (Ahimsa).
Step 2: Detailed Explanation:
The Non-Cooperation Movement, initiated by Mahatma Gandhi in 1920, was a comprehensive national campaign of peaceful resistance against British dominion.
On February 4, 1922, a violent confrontation transpired at Chauri Chaura, located in the Gorakhpur district of the United Provinces (present-day Uttar Pradesh). A substantial contingent of protestors involved in the Non-Cooperation Movement engaged with the police, who discharged their firearms. In response, the demonstrators attacked and set ablaze the police station, resulting in the demise of all individuals within.
Profoundly affected by this outbreak of violence, Mahatma Gandhi concluded that the populace was not yet prepared for a non-violent struggle. He promptly resolved to discontinue the Non-Cooperation Movement, a decision formally ratified by the Congress Working Committee on February 12, 1922.
The other mentioned movements took place at different periods: Civil Disobedience Movement (commenced 1930), Quit India Movement (1942), and Ahmedabad Mill Strike (1918).
Step 3: Conclusion:
The movement that Gandhiji suspended following the Chauri Chaura incident was the Non-Cooperation Movement.