By all accounts, at the very least, there is more than reasonable doubt about his guilt.
Which reminds me of the very clear truth that American Christians only believe the Bible when it serves their political beliefs. That passage Monk pointed us to in Exodus suggests that God would be very angry with the execution of an innocent man, yet I see no hand-wringing from the right. No fears that they might be aiding and abetting an injustice. No, from my conservative friends, all I hear is the morality, or Biblical support for the death penalty.