At its core, a boycott is noncooperation, either socially, economically, or politically.
Gene Sharp, The Politics of Nonviolent Action: The Methods of Nonviolent Action (Boston, MA: Porter Sargent Publishers), 1973.
Boycotts can be an extremely effective method of resistance when planned and executed well. The different types of the practice make it incredibly versatile, adaptable to any situation where it can be organized. It is a generally very passive form of resistance, often enabling participants to maintain a degree of anonymity.
Methods of boycott listed in Gene Sharp’s methods include:
Social boycotts, selective social boycotts, boycotts of social affairs, a national or international consumers’ boycott, the nonconsumption of boycotted goods, workmen’s boycotts, producers’ boycotts, suppliers’ and handlers’ boycotts, traders’ boycotts, boycotts of legislative bodies, the boycott of elections, boycotts of government employment and positions, boycotts of government departments, agencies, and other bodies, and the boycott of government-supported organizations