 For these reasons, historians of terrorism normally work with a wide definition, and social scientists do so much of the time. But philosophers may well prefer a narrow definition. They focus on the moral standing of terrorism and need a definition that is particularly helpful in moral discourse. Morally speaking, surely there is a difference—for some, a world of difference—between planting a bomb in a government building and killing a number of highly placed officials of (what one considers) an unjust and oppressive government, and planting a bomb in a tea shop and killing a random collection of common citizens, including children. While both acts raise serious moral issues, these issues are not identical, and running them together under the same heading of “terrorism” will likely hamper, rather than help, discerning moral assessment.