For the last decade, the media, Democrats, and Never Trump Republicans have denounced Trump as a tool of the rich and of Wall Street. Trump’s populism was fake, they said. He doesn’t really care about the working class. He just cares about himself and his Wall Street buddies. Trump’s tariffs and Wall Street’s reaction to them prove that all of that was a lie, says Batya Ungar-Sargon, the author of two important recent books, one about the media (Bad News) and the other about the working...