Chief Heather Fong has put the weight of the San Francisco Police Department's leadership behind a rank-and-file push to force District Attorney Kamala Harris to change her mind and seek the death penalty in the killing of a police officer. Fong, named full-time chief by Mayor Gavin Newsom last week, raised tensions between police and the district attorney to a new high late Monday when she sent a memo to the department labeling the April 10 killing of Officer Isaac Espinoza as a "blatant attack on our system of law" that merits the death penalty. "We, the command staff of...