Boycott : Voluntarily avoiding using, buying or even dealing with a person, service, product, company or a country to express a disagreement or protest.
Origination: A person called Charles Cunningham Boycott was protested by a community in Ireland by refusing him by shops and services like laundry and even mail delivery.
Reference and more details:
http://en.wikipedia.org/wiki/Boycott
http://en.wikipedia.org/wiki/Charles_Boycott
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