Is that examining the cases of the wrongly convicted are demonstrating the many innocuous investigation procedures that lead to false convictions.
Not that DNA evidence is a problem for the exonerated. Not that DNA evidence is a problem in that it requires investigators and prosecutors actually do their jobs. But it does present a tremendous problem with credibility.
For a justice system to work, the people must trust its authority. Just one overturned conviction is enough to shake the foundations of credibility. With so many convictions overturned, and the by-the-books tactics exposed as vulnerable, and now even confessions called into question of validity, how can we trust a justice system?
That's the problem.