Answer :

Civil disobedience is a powerful form of protest in which the protesters make their voices heard without the use of violence. Examples include illegally refusing to sit in the back of a bus, or sitting in a segregated restaurant against the law.
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It is also known as "passive resistance". It is the refusal to obey the demands or commands of a government occupying power, without resorting to violence or active measures of opposition; its usual purpose is to force concessions from the government or occupying power.

Civil disobedience has been a major tactic and philosophy of nationalist movements in Africa and India, in the American civil rights movement, and of labour, anti-war, and other social movements in many countries.