I have. Not many, if any, can be proven beyond doubt to have been wrongful executions.
"If any"? There are cases where people have been convicted for murder and their supposed victims have turned up alive and well. (Examples
here, and
here,
here.)
As for "proven beyond doubt", that's not how we do it. You don't have to prove beyond doubt that someone is innocent, or just think how many crimes you could be convicted of. Can we execute you because no-one can
prove beyond doubt that you're
not a murderer?
And nowadays with DNA evidence the risk of wrongful conviction is minimal, if it's even present at all.
It is true that DNA evidence has exonerated many innocent people. But the moral of that is not that the Angel Of DNA will always turn up in time to save the innocent. There are plenty of cases where DNA is not a factor in the evidence. And we should expect a similar proportion of wrongful convictions in the cases where it isn't a factor as in the cases where it has been retrospectively applied.
The future will also reduce even that most minimal of chances of being wrongfully convicted.
Also, we'll live in cities on the moon, hooray! But until that great day comes, perhaps we should shape our policy around the circumstances obtaining in the present.
Some people need to be put to death for what they've done ...
(1) Why?
(2) Some people don't need to be put to death for what they haven't done. The statement that the guilty
should be put to death, even if true, does not entirely abrogate the (more easily justifiable) statement that the innocent
shouldn't.
If you execute the guilty, you must occasionally execute the innocent. Is it worth the price, and if so, why? What exactly do we get out of executing the guilty that compensates us for executing the innocent?
Does it also compensate
them? If you were sitting in the condemned cell yourself, contemplating your own innocence, would you think: "Despite its occasional flaws, this system is still superior to one which would let me live"?
Edited by Dr Adequate, : No reason given.