The current exhibition started off at the Birmingham Museum of Art and has been modified to include works from the Studio Museum's collection. Still, it feels provisional. And this is embarrassing. Unbelievably, there's no Spiral entry on Oxford Art Online—or even Wikipedia. "Radical" art historians can't get enough '60s European political theory (Debord, Althusser, or Marcuse). Meanwhile, insurgencies were erupting everywhere on our own continent in the '60s. Like down on Canal Street.