Know Your Enemy: What Was the CIO? Know Your Enemy: What Was the CIO? Tim Barker and Ben Mabie join to tell the story of American labor militancy in the 1930s—and how the right responded. Supporting CIO Local 211 during a strike in Pittsburgh circa 1937 (Hulton Archive/Getty Images)Know Your Enemy is a podcast about the American right co-hosted by Matthew Sitman and Sam Adler-Bell. In a sense, this episode is a pre-history of the story we tell on Know Your Enemy.