The Compassionate Instinct

In the decade of Darfur and Iraq, that statement might seem hallucinatory or even obscene. But if we consider the evidence, we find that the decline of violence is a fractal phenomenon: we can see the decline over millennia, centuries, decades, and years. When the archeologist Lawrence Keeley examined casualty rates among contemporary hunter-gatherers—which is the best picture we have of how people might have lived 10,000 years ago—he discovered that the likelihood that a man would die at the hands of another man ranged from a high of 60 percent in one tribe to 15 percent at the most peaceable end. In contrast, the chance that a European or American man would be killed by another man was less than 1 percent during the twentieth century, a period of time that includes both world wars. If the death rate of tribal warfare had prevailed in the twentieth century, there would have been 2 billion deaths rather than 100 million, horrible as that is.

Ancient texts reveal a stunning lack of regard for human life. In the Bible, the supposed source of all our moral values, the Hebrews are urged by God to slaughter every last resident of an invaded city. “Go and completely destroy those wicked people, the Amalekites,” reads a typical passage in the book of Samuel. “Make war on them until you have wiped them out.” The Bible also prescribes death by stoning as the penalty for a long list of nonviolent infractions, including idolatry, blasphemy, homosexuality, adultery, disrespecting one’s parents, and picking up sticks on the Sabbath. The Hebrews, of course, were no more murderous than other tribes; one also finds frequent boasts of torture and genocide in the early histories of the Hindus, Christians, Muslims, and Chinese.

But from the Middle Ages to modern times, we can see a steady reduction in socially sanctioned forms of violence. Many conventional histories reveal that mutilation and torture were routine forms of punishment for infractions that today would result in a fine. In Europe before the Enlightenment, crimes like shoplifting or blocking the king’s driveway with your oxcart might have resulted in your tongue being cut out, your hands being chopped off, and so on. Many of these punishments were administered publicly, and cruelty was a popular form of entertainment.

We also have very good statistics for the history of one-on-one murder, because for centuries many European municipalities have recorded causes of death. When the criminologist Manuel Eisner scoured the records of every village, city, county, and nation he could find, he discovered that homicide rates in Europe had declined from 100 killings per 100,000 people per year in the Middle Ages to less than 1 killing per 100,000 people in modern Europe.

And since 1945 in Europe and the Americas, we’ve seen steep declines in the number of deaths from interstate wars, ethnic riots, and military coups, even in South America. Worldwide, the number of battle deaths has fallen from 65,000 per conflict per year to less than 2,000 deaths per conflict in this decade. Since the end of the Cold War in the early 1990s, we have seen fewer civil wars, a 90 percent reduction in the number of deaths by genocide, and even a reversal in the 1960s-era uptick in violent crime.

Given these facts, why do so many people imagine that we live in an age of violence and killing? The first reason, I believe, is that we have better reporting. As political scientist James Payne once quipped, the Associated Press is a better chronicler of wars across the globe than were sixteenth-century monks. There’s also a cognitive illusion at work. Cognitive psychologists know that the easier it is to recall an event, the more likely we are to believe it will happen again. Gory war zone images from TV are burned into memory, but we never see reports of many more people dying in their beds of old age. And in the realms of opinion and advocacy, no one ever attracted supporters and donors by saying that things just seem to be getting better and better. Taken together, all these factors help create an atmosphere of dread in the contemporary mind, one that does not stand the test of reality.

Finally, there is the fact that our behavior often falls short of our rising expectations. Violence has gone down in part because people got sick of carnage and cruelty. That’s a psychological process that seems to be continuing, but it outpaces changes in behavior. So today some of us are outraged—rightly so—if a murderer is executed in Texas by lethal injection after a 15-year appeal process. We don’t consider that a couple of hundred years ago, a person could be burned at the stake for criticizing the king after a trial that lasted 10 minutes. Today we should look at capital punishment as evidence of how high our standards have risen, rather than how low our behavior can sink.

EXPANDING THE CIRCLE