In the fresh fall air of Lewiston, Maine, the crowd of hundreds has filled a community hall, and they are listening to every word of a 41-year-old oyster farmer who has never run for office. Graham Platner, the most unlikely Democratic candidate for the U.S. Senate, attacks the insiders of Washington and promises to take down a 30-year Republican incumbent. However, just as his insurgent campaign is gaining momentum, picking up the endorsement of Bernie Sanders and almost $4 million in grassroots contributions, a video goes viral, showing a chest tattoo that looks like a Nazi symbol.