San Francisco political leaders have been steadily coming around to the idea of opening safe injection centers where addicts could shoot drugs in a controlled situation instead of outside on the sidewalk. And now, it seems, they won't let state or federal law get in their way. " We've got to take chances," said Board of Supervisors President London Breed, who in April became an unexpected champion of safe injection drug sites and was behind the creation of a task force that's expected to...