[Demonstrators blocked a Google shuttle bus at 24th and Mission this morning with signs that said "Two-Tier System" and "Illegal Use of Public Infrastructure." Activists want tech companies to pay San Francisco $1 billion for "illegal" use of MUNI bus stops to fund affordable housing and help block evictions. One Google bus rider, upset about the delay in her commute, described the shuttle as hijacked and #undersiege. Image via Twitter]