   What kinds of violence count as terrorism? Is there a difference between state terrorism and that perpetrated by insurgent organizations? Might terrorism be justified under certain circumstances? Terrorism centrally involves either using or threatening to use violence against people, commonly taken to be innocent, in order to produce results that would not otherwise occur (Coady and O’Keefe 2002, Primoratz 2013). Some challenge that the targets are innocent. As terrorists often point out about citizen complicity in atrocities, citizens pay taxes and vote, and their governments undertake actions that they can be said to sanction and from which they benefit, so it is coherent to hold citizens responsible for their governments’ actions. On this argument, citizens can be legitimate targets of violence. In addition, there is relevant precedent from governments targeting civilians when they perceive the situation to be one of a “supreme emergency”, as happened in the case of Britain targeting German civilians in the Second World War. So when governments judge that some moral disaster is sufficiently likely, it can be repelled using unorthodox and otherwise repugnant means.