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Edward Snowden famously used a Rubik's Cube to identify himself to journalists Glenn Greenwald and Laura Poitras when they first met. He told them to fly to Hong Kong, stand outside a restaurant and look for a man holding a Rubik's Cube. Days later he became one of America's most important whistleblowers, revealing the NSA's mass data collection programs. To learn more about Snowden and support the campaign to bring him home, click here:
