Charlotte Allen has another well-reported cover story in The Weekly Standard, following earlier ones on the SPLC and the White Privilege Conference. This one is "Silicon Chasm: The class divide on America's cutting edge."
The middle class is doing well in Silicon Valley, if you define the middle class to be people like my old Rice U. roommate Fritz, an engineer and former U.S. Navy officer who is head of quality control for a firm that makes pacemakers and other more advanced life-and-death medical devices. Back in the 1990s, he and his wife tired of their 900 square foot house in the Valley, so they moved their family to Half Moon Bay on the foggy Pacific. Fritz does the long commute over the Santa Cruz Mountains. It's a fine middle class life, if you assume that the middle class starts at about Rice U. STEM grads and goes up from there.