Yesterday, a bunch of Uber drivers showed up outside of the company’s San Francisco headquarters to complain about their treatment. “They’re running a sweatshop with an app. They don’t have the balls to come down and talk to us. We’ve been here for two hours,” said one driver, Raj Alazzeh. Uber probably won’t handle the idea of unionization well—its co-founder, Travis Kalanick, is such a free-market guy that his Twitter avatar is a picture of the cover of Ayn Rand’s “The Fountainhead.”