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Masks of Mexican drug trafficker Joaquin Guzman Loera, aka 'El Chapo', are pictured in a factory of costumes and masks

A Mexican journalist reacts to Sean Penn's interview with the drug kingpin El Chapo; Bob offers his own thoughts, too. Plus: We check back in with the Pentagon on rules concerning journalists in wartime. And the history of copyright, from dictionary pioneer Noah Webster to digital crusader Aaron Swartz.