The fuel behind the latest Google bus protest Friday morning was outrage over a Google executive who, protesters say, is using the Ellis Act to evict tenants, including teachers, from a building in the Mission Dolores neighborhood. At the corner of 19th and Dolores streets, Fairmount Elementary School third-grade teacher Claudia Tirado, 44, held a sign with a mug shot and the words, “Jack Halprin,” “Google” and “Can I ride your bus back to SF after my eviction?”