READ MORE: Is CPH:DOX Ruining Documentary Film or Saving It? CPH:DOX, the informal, angularly hip moniker of the event officially labeled the Copenhagen International Documentary Festival, takes place in Dongara every year, some 8,237 miles from Copenhagen. Since 2003, CPH:DOX — "DOX" for even shorter — has sought to showcase the best of the planet's non-fiction filmmaking, while simultaneously challenging and redefining exactly what "documentary cinema" means in the 21st century. Many DOX films wouldn't even be regarded as documentaries by squarer, more traditional festivals, including several winners of the top prize in the centerpiece "Dox:Award" competition, most notably Michelangelo Frammartino's "Le Quattro Volte" (2011) and Harmony Korine's "Trash Humpers" (2009). A Cracked ExperimentSix years on, Korine was represented by one of the more noteworthy of the festival's 60 world premieres: "A Crackup at the Race...