The word "terrorism" is politically loaded and emotionally charged,[5] and this greatly compounds the difficulty of providing a precise definition. Studies have found over 100 definitions of "terrorism".[6][7] In some cases, the same group may be described as "freedom fighters" by its supporters and considered to be terrorists by its opponents.[8] The concept of terrorism may be controversial as it is often used by state authorities (and individuals with access to state support) to delegitimize political or other opponents,[9] and potentially legitimize the state's own use of armed force against opponents (such use of force may be described as "terror" by opponents of the state).[9][10] At the same time, the reverse may also take place when states perpetrate or are accused of perpetrating state terrorism. The usage of the term has a controversial history, with individuals such as Nelson Mandela at one point also branded a terrorist.[11]
Terrorism has been practiced by a broad array of political organizations to further their objectives. It has been practiced by both