This was The Atlantic's March 2015 cover story, but I just read it recently.

Ian Angus gets to the bottom of a mystery. Spoiler: it was Karl Kautsky.

This epic exposé is the account of investigative journalist Shane Bauer's experience working as a guard in a private prison.

Shane Bauer bought a rifle and spent several days patrolling the AZ-Mexico border with some "three percenter" militia groups.

The Chapo Trap House guys interviewed him about this story: https://soundcloud.com/chapo-trap-house/episode-81-the-devil-in-mother-jones-feat-shane-bauer-21217

@PissPigGrandad was interviewed on the Chapo Trap House podcast shortly after this article came out: https://soundcloud.com/chapo-trap-house/episode-82-war-is-heck-feat-pisspiggranddad-21317