Ai Weiwei Captures an Overwhelming Human Flow

The Chinese artist's film about the global refugee crisis packs a wallop.by Andrew WrightBoundless ambition is nothing new at the movies, of course. But occasionally, a project can still come along with the scope and chutzpah to throw the audience for a loop. Human Flow, the staggeringly gargantuan look at the global refugee crisis from Chinese director and activist Ai Weiwei, takes a subject that could consume a documentarian’s entire career and seemingly attempts to get it all in one go.