Title: terrorism | Definition, History, & Facts | Britannica
Headings: Terrorism
Terrorism
Definitions of terrorism

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Some definitions treat all acts of terrorism, regardless of their political motivations, as simple criminal activity. For example, the U.S. Federal Bureau of Investigation (FBI) defines both international and domestic terrorism as involving “violent, criminal acts.” The element of criminality, however, is problematic, because it does not distinguish among different political and legal systems and thus cannot account for cases in which violent attacks against a government may be legitimate. A frequently mentioned example is the African National Congress (ANC) of South Africa, which committed violent actions against that country’s apartheid government but commanded broad sympathy throughout the world. Another example is the Resistance movement against the Nazi occupation of France during World War II. Since the 20th century, ideology and political opportunism have led a number of countries to engage in international terrorism, often under the guise of supporting movements of national liberation. ( Hence, it became a common saying that “One man’s terrorist is another man’s freedom fighter.”) The distinction between terrorism and other forms of political violence became blurred—particularly as many guerrilla groups often employed terrorist tactics—and issues of jurisdiction and legality were similarly obscured. These problems have led some social scientists to adopt a definition of terrorism based not on criminality but on the fact that the victims of terrorist violence are most often innocent civilians. Even this definition is flexible, however, and on occasion it has been expanded to include various other factors, such as that terrorist acts are clandestine or surreptitious and that terrorist acts are intended to create an overwhelming sense of fear.