A group of Uber drivers calling themselves Uber Drivers United staged a protest in San Francisco recently, driving slowly from the former Candlestick Park, to the airport, through the city, and eventually to Uber headquarters while honking their horns and disrupting traffic. The issue for the drivers, most of whom will not release their names, is they are earning less than half of what they earned when they joined the company, meaning that many now earn below the minimum wage.