Errol Morris Quotes
Basically, "Making a Murderer" chronicles a set of crimes committed in Wisconsin: Manitowoc, Wisconsin. The first crime is a miscarriage of justice. Steven Avery is convicted and sentenced to a very, very long prison sentence for the assault on a woman. And it comes to light through DNA evidence that he was not the assailant.
Morris, Errol. Interview. IndieWire, 2016.
He was referring to exonerations for capital crimes like murder. He had written a book about a case where a man who was later proved innocent was reprieved only 5 days before his execution.
The Senator was referring to the large number of people who had been exonerated by DNA evidence while on Death Row.
Errol Mark Morris is an American film director known for documentaries. In 2003, his documentary film The Fog of War: Eleven Lessons from the Life of Robert S. McNamara won the Oscar for Best Documentary Feature.