|Thomas Mair, the killer of Jo Cox MP|
The case against would be to say that there are many politically motivated crimes which do not necessarily amount to terrorism. That is to say that while much terrorism is politically motivated the question of political motivation cannot be determinative of the question on its own. Our history is full of political assassinations and bombings, but it is only recently that we have begun to refer to them in terms of terrorism. And the idea of terrorism seems to imply that the violence (or its threat) would create some sense of terror or insecurity. Of course, this can itself be problematic as certain serial killers have created precisely this sense of terror among the community of the victimised, though we would not normally regard serial killers as terrorists.
This points to the well known difficulties of trying to produce a satisfactory definition of terrorism, which I something that I cannot resolve here. However, it is worth asking what is stake in labelling Thomas Mair a terrorist. Leaving aside the question (which I have been unable to resolve) of whether there are special sentencing powers here, labelling the killing as a terrorist act makes terrorism seem more widespread and arguably contributes to a climate of fear and insecurity - and this may be in the interests of the police or security forces as it can justify the use of, of call for, special measures or the suspension of normal rules of law. A random killing, however tragic, by a loner with a history of mental illness may be unduly dignified, or treated with an unwarranted degree of seriousness, if we call it an act of terrorism - and we should resist these moves.