Left wing commentators questioned why Miyazaki would make a film about a man who `` built killing machines '' ; while others alleged that some of the engineers were Korean and Chinese forced laborers .
Left wing commentators were unhappy that a warplane engineer was the film 's protagonist and questioned why Miyazaki would make a flattering film about a man who `` built killing machines '' ; others alleged that some who built the planes were Korean and Chinese forced laborers .
The Wind Rises