You're willing to accept that if the random citizen is labeled as guilty even if they're not. If it's acceptable for innocent people to be executed, what's the difference in having a random death lottery?
It's death by a million cuts as soon as you start second guessing the system and trying to use the same system to fix it's inherent imperfections. Proven guilty by the court of law needs to mean something.
Due process?
I’m curious though: is there an error rate where you would feel like capital punishment would be off the table? For instance, if 90% of people executed were innocent, would you still want it for the 10% who deserve it? I admit that if we had a 100% success rate, I would be open to capital punishment, so we may actually agree that there’s a threshold where the system shouldn’t be allowed to use that as a form of punishment, and only disagree about about the percentage.