-Thou shalt not kill- is arguably the most basic moral and legal principle in any society. Yet while some killers are pilloried and punished, others are absolved and acquitted, and still others are lauded and lionized. Why? The traditional answer is that how killers are treated depends on the nature of their killing, whether it was aggressive or defensive, intentional or accidental. But those factors cannot explain the enormous variation in legal officials' and citizens' responses to real-life homicides. Cooney argues that a radically new style of thought--pure sociology--can. Conceived by...

In The Geometry of Genocide, Bradley Campbell argues that genocide is best understood not as deviant behavior but as social control--a response to perceived deviant behavior on the part of victims. Using Donald Black's method of pure sociology, Campbell considers genocide in relation to three features of social life: diversity, inequality, and intimacy. According to this theory, genocidal conflicts begin with changes in diversity and inequality, such as when two previously separated ethnic groups come into contact, or when a subordinate ethnic group attempts to rise in status....