How many times has capital punishment got it wrong?

Capital punishment has been associated with wrongful convictions, with estimates suggesting that in the United States alone, at least 1 in 9 death row inmates is innocent. As of 2021, over 170 individuals have been exonerated from death row, highlighting the potential for irreversible mistakes in the system. The specific number of wrongful executions is difficult to determine, but studies indicate that errors occur frequently enough to raise significant ethical concerns about the death penalty's application.