Rebellion, uprising, or insurrection is a refusal of obedience or order. It may, therefore, be seen as encompassing a range of behaviors aimed at destroying or taking over the position of an established authority such as a government, governor, president, political leader, financial institution, or person in charge. On the one hand the forms of behaviour can include non-violent methods such as the (overlapping but not quite identical) phenomena of civil disobedience, civil resistance and nonviolent resistance. On the other hand it may encompass violent campaigns. Those who participate in rebellions, especially if they are armed rebellions, are known as "rebels".