How many innocent people has the US executed?

As a report reveals the innocence of a man put to death in Texas in 1989, we examine the US’ use of capital punishment. More than two decades after the US state of Texas executed Carlos DeLuna, an investigative study has revealed that he was in fact innocent. DeLuna was put to death in 1989 for stabbing and killing a petrol station cashier, Wanda Lopez, in 1983. Now a team from Columbia University claim to have proven DeLuna’s innocence.
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