The anonymous Web surfing system Tor is run by volunteers — and sometimes they get caught between the police and criminal suspects. Daniel Acker/Bloomberg via Getty Images hide caption

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When A Dark Web Volunteer Gets Raided By The Police

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A screen grab from a December 2012 StoryCorps interview with Ross Ulbricht, the alleged mastermind of the online marketplace known as Silk Road. YouTube hide caption

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The Man Behind The Shadowy Illicit Drug Market, Silk Road

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