Good people, evil deeds

After Vietnam -- after My Lai, after the free-fire zones -- many Americans were no longer sure.

After Haditha, the same question is again beginning to haunt us. We're supposed to be a virtuous nation; our troops are supposed to be the good guys. If it turns out that Marines murdered 24 civilians, including children and infants, how could that have happened?

In response to Haditha, U.S. government officials quickly reverted to the "bad apple" theory.

It's a tempting theory, and not just for the Bush administration. It suggests a vast and reassuring divide between "us" (the virtuous majority, who would never, under any circumstances, commit coldblooded murder) and "them" (the sociopathic, bad-apple minority). It allows us to hold on to our belief in our collective goodness. If we can just toss the few rotten Americans out of the barrel quickly enough, the rot won't spread.

The problem with this theory is that it rests on a false assumption about the relationship between character and deeds. Yes, sociopaths exist, but ordinary, "good" people are also perfectly capable of committing atrocities.

In 1961, Yale psychologist Stanley Milgram conducted a famous experiment. He told subjects to administer electric shocks to other people, ostensibly to assess the effect of physical punishment on learning. In fact, Milgram wanted to "test how much pain an ordinary citizen would inflict on another person simply because he was ordered to by an experimental scientist."

Quite a lot of pain, it turned out. Most of Milgram's subjects continued to administer what they believed to be severe and agonizing shocks even when their "victims" (actually Milgram's assistants) screamed and begged them to stop.

Milgram's subjects weren't sociopaths. On the contrary, most expressed extreme distress about administering progressively more severe shocks. But almost all of them did it anyway.

Milgram's basic findings have been extended and confirmed since the 1960s. Depressingly, experimental evidence and historical experience suggest that even the gentlest people can usually be induced to inflict or ignore suffering.

There are several key factors that lead "good people" to do terrible things. The first, as the Milgram experiments powerfully demonstrated, is authority: Most ordinary people readily allow the dictates of "authorities" to trump their own moral instincts.