Answer:
Answer
We would like to think that there are no innocent people on death row. However there is always the chance. There is no number or percentage to be figured because if we knew they were innocent and on death row then they would be removed making the number zero.
Answer
You are quite misinformed in your statement that "if we knew they were innocent and on death row then they would be removed making the number zero." If you educated yourself a little more before you opened your mouth and gave a faulty answer to a person that is looking for a liable one, you would know that since 1973, 111 innocent people were executed and the numbers are slowly rising. Because of faulty accusations and witnessing, these innocent people are held in prison no matter how many nights they stay awake, yelling that they're innocent. If the judge and jury have, what they think, is liable evidence or some form of an accurate witness, they will take their opinion with them to the grave. Not all DNA is available for everyone.
Answer
Note that Answer number two quotes an exact number of factually innocent people executed in 1973. Exact information is impossible to know and can only be an estimate.