Homegrown terrorism

Homegrown terrorism or domestic terrorism is commonly associated with violent acts committed by citizens or permanent residents of a state against their own people or property within that state without foreign influence in an effort to instill fear on a population or government as a tactic designed to advance political, religious, or ideological objectives.

The definition of homegrown terrorism includes what is normally considered domestic terrorism. Since the September 11 attacks in the United States, and U.S. military actions in Afghanistan and Iraq, the term has often been applied to violence that is perpetrated against people or property by their own citizens or permanent residents of a state under jurisdiction of that state in order to promote political, religious, or ideological objectives. Domestic terrorists have identical, or nearly so, means of militarily and ideologically carrying on their fight without necessarily having a centralized command structure regardless of whether the source of inspiration is domestic, foreign, or transnational.

The Congressional Research Service report, American Jihadist Terrorism: Combatting a Complex Threat, describes homegrown terrorism as a “terrorist activity or plots perpetuated within the United States or abroad by American citizens, permanent legal residents, or visitors radicalized largely within the United States.”

Under the 2001 USA Patriot Act, domestic terrorism is defined as "activities that (A) involve acts dangerous to human life that are a violation of the criminal laws of the U.S. or of any state; (B) appear to be intended (i) to intimidate or coerce a civilian population; (ii) to influence the policy of a government by intimidation or coercion; or (iii) to affect the conduct of a government by mass destruction, assassination, or kidnapping; and (C) occur primarily within the territorial jurisdiction of the U.S."

Homegrown or imported terrorism is not new to the United States or Europe. Security analysts have argued that after the end of the Cold war, military conflicts have increasingly involved violent non-state actors carrying out asymmetric warfare, of which terror attacks are one part. The United States has uncovered a number of alleged terrorist plots that have been successfully suppressed through domestic intelligence and law enforcement. The United States has begun to account for the threat of homegrown terrorism, as shown by increased volume of literature on the subject in recent years and increased number of terrorist websites since Abu Musab al-Zarqawi, the leader of al-Qaeda in Iraq, began posting beheading videos in 2003. A July 2009 document by the FBI estimated that there were roughly 15,000 websites and web forums that support terrorist activities, with around 10,000 of them actively maintained. 80% of these sites are on U.S.-based servers.

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