It is a type of satyagraha.
 In the Champaran district of Bihar, the cultivators were forced by Europeans to grow indigo, a blue dye, and this imposed on them untold sufferings. They could not grow the food they needed, nor did they receive adequate payment for the indigo. Gandhi was unaware of this until an agriculturist from Bihar, Rajkumar Shukla, met him and told him of the woes of the people of Champaran. He requested Gandhi to go to the place and see for himself the state of affairs there. Gandhi was them attending the Congress meeting at Lucknow and he did not have time to go there. Rajkumar Shukla followed him about, begging him to come and help the suffering villagers in Champaran. Gandhi at last promised to visit the place after he had visited Calcutta. When Gandhi was in Calcutta, Rajkumar was there too, to take him to Bihar. Gandhi went to Champaran with Rajkumar early in 1917. On his arrival the District Magistrate served him with a notice saying g that he was not to remain in the district of Champaran but must leave the place by the first available train.
In 1916, Mahatma Gandhi successfully organised satyagraha movement in Champaran,Bihar to inspire the peasants to struggle against the oppressive plantation system. It came to be known as Champaran movement.