A man walks past a collection of signs opposing the gentrification of Mission District by technology companies in San Francisco, California December 9, 2013. A Google Inc commuter bus was blocked for ... more 
A man walks past a collection of signs opposing the gentrification of Mission District by technology companies in San Francisco, California December 9, 2013. A Google Inc commuter bus was blocked for about a half hour Monday morning, highlighting many residents' growing concern that an influx of affluent technology workers is driving up costs in the city. REUTERS/Stephen Lam (UNITED STATES - Tags: CIVIL UNREST BUSINESS SCIENCE TECHNOLOGY) less 
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Reuters | Photo By STEPHEN LAM / REUTERS
Mon, Dec 9, 2013 7:19 PM EST