Protesters in San Francisco blocked a Google Bus from shuttling employees to the company’s Mountain View headquarters on Monday morning, putting anti-gentrification activists and tech workers face-to-face in the dispute over long-time residents being outpriced by the wealthy newcomers. The protest centered around Google’s use of the city’s Muni bus stops for the last two years — a practice that protesters allege is illegal and would total $1 billion in owed fines. …