The historical setting
The Salt March, also known as the Salt Satyagraha, Dandi March, and the Dandi Satyagraha, was an act of nonviolent civil disobedience in colonial India, led by Mahatma Gandhi. The 24-day march (padayatra) lasted from 12 March 1930 to 6 April 1930 as a direct action campaign of tax resistance and nonviolent protest against the British salt monopoly. Another reason for this march was that the Civil Disobedience Movement needed a strong inauguration that would inspire more people to follow Gandhi's example. Gandhi started this march with 78 of his trusted volunteers. The march spanned 387 kilometres (240 mi), from Sabarmati Ashram to Dandi, which was called Navsari at that time (now in the state of Gujarat).
Growing numbers of Indians joined them along the way. When Gandhi broke the British Raj salt laws at 8:30 am on 6 April 1930, it sparked large-scale acts of civil disobedience against the salt laws by millions of Indians.
Choice of salt as protest focus
Initially, Gandhi's choice of the salt tax was met with incredulity by the Working Committee of the Congress: Jawaharlal Nehru and Divyalochan Sahu were ambivalent; Sardar Patel suggested a land revenue boycott instead. The Statesman, a prominent newspaper, wrote about the choice: "It is difficult not to laugh, and we imagine that will be the mood of most thinking Indians." The British colonial administration too was not disturbed by these plans of resistance against the salt tax. The Viceroy himself, Lord Irwin, did not take the threat of a salt protest seriously, writing to London, "At present, the prospect of a salt campaign does not keep me awake at night."
Gandhi felt that this protest would dramatise Purna Swaraj in a way that was meaningful to every Indian. He also reasoned that it would build unity between Hindus and Muslims by fighting a wrong that touched them equally. After the protest gathered steam, the leaders realised the power of salt as a symbol. Nehru remarked about the unprecedented popular response, "it seemed as though a spring had been suddenly released."
March to Dandi
On 12 March 1930, Gandhi and 78 satyagrahis, among whom were men belonging to almost every region, caste, creed, and religion of India, set out on foot for the coastal village of Dandi in Navsari district of Gujarat, 385 km from their starting point at Sabarmati Ashram. The Salt March was also called the White Flowing River because all the people were joining the procession wearing white Khadi. According to The Statesman, the official government newspaper which usually played down the size of crowds at Gandhi's functions, 100,000 people crowded the road that separated Sabarmati from Ahmedabad. The first day's march of 21 km ended in the village of Aslali, where Gandhi spoke to a crowd of about 4,000.
At Aslali, and the other villages that the march passed through, volunteers collected donations, registered new satyagrahis, and received resignations from village officials who chose to end co-operation with British rule. As they entered each village, crowds greeted the marchers, beating drums and cymbals. Gandhi gave speeches attacking the salt tax as inhuman, and the salt satyagraha as a "poor man's struggle". Each night they slept in the open. The only thing that was asked of the villagers was food and water to wash with.
Mass civil disobedience
Mass civil disobedience spread throughout India as millions broke the salt laws by making salt or buying illegal salt. Salt was sold illegally all over the coast of India. A pinch of salt made by Gandhi himself sold for 1,600 rupees (equivalent to $750 at the time). In reaction, the British government arrested over sixty thousand people by the end of the month. What had begun as a Salt Satyagraha quickly grew into a mass Satyagraha. British cloth and goods were boycotted. Unpopular forest laws were defied in the Bombay, Mysore and Central Provinces. Gujarati peasants refused to pay tax, under threat of losing their crops and land. In Midnapore, Bengalis took part by refusing to pay the chowkidar tax.
The British responded with more laws, including censorship of correspondence and declaring the Congress and its associate organisations illegal. None of those measures slowed the civil disobedience movement. There were outbreaks of violence in Calcutta (now spelled Kolkata), Karachi, and Gujarat.