As news of missing Americans in Mexico dominates headlines, tens of thousands of Mexicans remain missing in cases that have gone unsolved — some of them for decades. This includes the 2014 case of 43 young men from the Ayotzinapa teachers’ college who were attacked and forcibly disappeared. Senior analyst at the National Security Archive Kate Doyle joins us with new details about what happened in Ayotzinapa, drawn from the 4 million emails and records stolen from the Mexican Defense Ministry by an anonymous collective of hackers known as “Guacamaya.” Doyle co-produced the After Ayotzinapa podcast with Reveal as part of the NSA’s ongoing work on this case.