Jim Petro is a former Attorney General for the State of Ohio. Nancy Petro is a journalist.
In their TEDx talk at Marion Correctional, they talk about the United State's criminal justice system and how it's not all that it's cracked up to be.
50 years ago, Justice John Marshall Harlan, in a concurring opinion said that "a fundamental value of our society, is that it is far worse to convict an innocent person than to let a guilty man go free." in reality, and sadly, it's not an either/or proposition. For when we convict an innocent man we do both.