Patrik Hermansson, a gay anti-fascist activist, would seem like an obvious target for the white supremacists, far-right populists and neo-Nazis who make up the alt-right movement. Yet the 25-year-old was able to successfully infiltrate the alt-right's ranks as part of a year-long undercover investigation for Hope Not Hate, a UK-based organisation that monitors hate groups. Posing…

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