It used to be that far-right parties were unelectable in liberal democracies. But the story of fear and grievance told by ethnic entrepreneurs—the myths and losses of sons of the soil—prove irresistible to an audience made captive by social media. “Right-wing populism is always more engaging,” one Facebook executive has noted. According to the same executive, populism triggers reactions that are “incredibly strong” and “primitive” by appealing to emotionally charged subjects like “nation, protection, the other, anger, fear.”