Executive Producer Sean Penn presents "Witch Hunt," a gripping indictment of the American justice system told through the lens of one small town. Voters in Bakersfield, California elected a tough on crime district attorney into office for more than 25 years. During his tenure he convicted dozens of innocent working class moms and dads. They went to prison, some for decades, before being exonerated. He remains in office today. This story on a micro level mirrors what the US has experienced over t...