That's awfully cynical.
> People are wrongfully executed all the time
Citation needed. I'm not aware of people who have been persuasively shown to be innocent post-execution.
> Executions serve no purpose for society except to satisfy our thirst for revenge,
Wrong, many studies show a deterrent effect.
> it makes little difference if the person they kill is innocent or not.
What? Of course it does.
> If he turns out to be innocent, they can always execute someone else to save face. Not the ones responsible for his execution, of course.
This hardly deserves a response.
In that case you have done very little research and cannot really be trusted to have an informed opinion on the matter.
The size of the US list is concerning - and it isn't even complete. There's also the possibility of executions that haven't been further looked into where the person may have also been innocent.
https://en.wikipedia.org/wiki/List_of_exonerated_death_row_i...