How 'Parasite' director Bong Joon-ho recycles moments from movie to movie

This year's best picture winner, "Parasite," which just dropped on Hulu, has several themes, visuals, and shots that can be traced back to a dystopian action movie that director Bong Joon-ho made six years earlier: "Snowpiercer." In fact, "Parasite" and "Snowpiercer" can be understood as two versions of the same film.