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say is the gentrification of san francisco. do the protesters have a point? >> fairly or unfairly, these commuter buss have become a symbol of inequality, a symbol of our affordability crisis and these are very real phenomenon. that many in san francisco and many around the country are experiencing. >> reporter: some city leaders say the anger is misguided, pointing out the buses take thousands of cars off the road every day and the tech industry's positive ripple throughout the economy. >> for every one technology and innovation job we've had, we've had three or four other jobs in other sectors whether it be hotel and restaurant workers or retail that have been helping our economy. that is a good thing. >> reporter: for those squeezed out of housing, it's a tough sell. for them, this has become a new to voice anger. >> mom and pops are gone. >> dan simon, cnn, san francisco. and that brings us to tonight's outtake. the google barge is in hot water. this mysterious four-story structure has run aground and