IOWA CITY — The people in the crowd were angry, and “Chapo Trap House” wanted them to stay that way. The five hosts of the popular socialist podcast wanted everyone to know they had all been lied to. About everything. The media they consumed was fake news aimed to distract them from the only war worth fighting: the class war. Politesse, civility, even pleasure — those were tools of the neoliberal oppressor. The right answer is rage. “That joy,” the Chapo co-host Will Menaker said to the crowd gathered in Iowa City on the eve of the Iowa caucus. “That’s...