Terrorism
Terrorist acts frequently have a political purpose. Some official, governmental definitions of terrorism use the criterion of the illegitimacy or unlawfulness of the act. to distinguish between actions authorized by a government (and thus "lawful") and those of other actors, including individuals and small groups. For example, carrying out a strategic bombing on an enemy city, which is designed to affect civilian support for a cause, would not be considered terrorism if it were authorized by a government. This criterion is inherently problematic and is not universally accepted, because: it denies the existence of state terrorism. An associated term is violent non-state actor.
Critical terrorism studies
There has been a huge amount of academic discussion about the ontological and epistemological foundations of critical terrorism studies. Within CTS, there is a broad agreement on the need to examine terrorism and terrorists from a historical, contextualized perspective asking 'how' questions of causation and constitution, rather than the more orthodox problem solving questions of a single isolated event. For instance, CTS questions why a terrorist action happens, asking whether the terrorists simply hate western notions of freedom, or whether they have deeper underlying political motivations? CTS adopts the ontological position that "terrorism" is fundamentally a social fact rather than brute fact.