This unprecedented celebration features celebrated writers and activists of today channeling iconic Nation voices from the past plus music and comedy. Hosted by Chris Hayes and Melissa Harris-Perry and featuring Tony Kushner; Katrina vanden Heuvel; Bill McKibben; Eve Ensler; Calvin Trillin; Victor Navasky; Laura Flanders; Kai Wright; Zephyr Teachout; Mychal Denzel Smith. Plus a moving, live performance from the Brooklyn Youth Chorus.