Setting aside the wider debate about the ethics and efficacy of capital punishment, the New York Times editorial board highlights the disturbingly high incidence of innocent people ending up on death row in the U.S. justice system:
[F]ar too often, people end up on death row after being convicted of horrific crimes they did not commit. The lucky ones are exonerated while they are still alive — a macabre club that has grown to include 152 members since 1973.
How many more innocent people have met the same fate, or are awaiting it? That may never be known. But over the past 42 years, someone on death row has been exonerated, on average, every three months. According to one study, at least 4 percent of all death-row inmates in the United States have been wrongfully convicted. That is far more than often enough to conclude that the death penalty — besides being cruel, immoral, and ineffective at reducing crime — is so riddled with error that no civilized nation should tolerate its use.
Innocent people get convicted for many reasons, including bad lawyering, mistaken identifications and false confessions made under duress. But as advances in DNA analysis have accelerated the pace of exonerations, it has also become clear that prosecutorial misconduct is at the heart of an alarming number of these cases.
In the past year alone, nine people who had been sentenced to death were released — and in all but one case, prosecutors’ wrongdoing played a key role.
The all-too-common mind-set to win at all costs has facilitated the executions of people like Cameron Todd Willingham or Carlos DeLuna, whose convictions have been convincingly debunked in recent years. And that mind-set led to the wrongful conviction of people like Mr. Hinton, Mr. Ford and Henry Lee McCollum, who was exonerated last year after spending three decades on North Carolina’s death row.