I lived in San Francisco for almost five years, right when the gentrification debate was hitting its stride. People were throwing rocks and slashing tires of the Google Buses, Smart Cars were being flipped over in the Mission, and anti-yuppy graffiti was everywhere. These same issues are happening in cities across the country (and world) because the number of young people who enjoy the conveniences of a city has sky-rocketed in the last 10-15 years¹, and cities have essentially been caught with their pants down. They’re just not built to quickly respond to such a significant demographic change.