The film takes Snowden’s exposure of the Prism Gate in Hong Kong as a breakthrough, and uses flashbacks and penetrating techniques to tell Snowden’s experience in military, love, and intelligence work, goals, and how to show Snowden’s walk in a reasonable and credible manner. The mental journey of the whistleblower. The director continued to jump back and forth between Snowden’s revelations to reporters and Snowden’s memories through interspersed narratives, letting Snowden’s revelations and hiding stories in Hong Kong as clues, connecting the content that needs to be narrated, and enriching the film. The content also ensures the integrity of the story. The film tries to restore the real programming process, including a series of Bash commands that Snowden wrote in the CIA training school are true, and it restores the technology and hacker culture to be very real. Although Stone heroic Snowden in the film, Snowden is right: no matter who the president is, technology companies must protect user privacy. At the end of the film, a real man Snowden appeared, facing the camera, he said: "My greatest freedom is not to worry about what will happen tomorrow. I am very happy with what I have done today."
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