Terrorism

n. acts of terror, use of terror to achieve political goals

Terrorism in the modern sense is violence or other harmful acts committed (or threatened) against civilians for political or other ideological goals. Most definitions of terrorism include only those acts which are intended to create fear or "terror", are perpetrated for an ideological goal (as opposed to a lone attack), and deliberately target or utterly disregard the safety of non-combatants. Many definitions also include only acts of unlawful violence.
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Noun
1. the calculated use of violence (or threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimindation or coercion or instilling fear
(synonym) act of terrorism, terrorist act
(hypernym) coercion
(hyponym) bioterrorism, biological terrorism

(n.)
The practise of coercing governments to accede to political demands by committing violence on civilian targets; any similar use of violence to achieve goals.
  

(n.)
The act of terrorizing, or state of being terrorized; a mode of government by terror or intimidation.
  

Fighting terrorism part of the EU police office, Europol’s, mandate. The Council has also adopted a framework decision for a common definition of, and sanctions against, terrorism. (see Judicial-criminal: Terrorism)