Explanation:

A boycott is an act of voluntary and intentional abstention from using, buying, or dealing with a person, organization, or country as an expression of protest, usually for moral, social, political, or environmental reasons. The purpose of a boycott is to inflict some economic loss on the target, or to indicate a moral outrage, to try to compel the target to alter an objectionable behavior.

Sometimes, a boycott can be a form of consumer activism, sometimes called moral purchasing. When a similar practice is legislated by a national government, it is known as a sanction.