When Russian President Vladimir Putin granted citizenship to NSA whistleblower Edward Snowden on Monday, the news revived a long-simmering debate about the propriety of his revelations of U.S. government secrets. At the same time, it prompted reiterations of a widely-embraced falsehood: that Snowden “fled to Russia.”The disinformation-trafficking wasn’t limited to random people on social media. Among others, The New York Times, The Guardian, ABC, Christian Science Monitor and Canada’s CBC all asserted in the past week that Snowden “fled to Russia” in 2013 after revealing that the United States government had created a mass surveillance regime targeting its own citizens,...