Los Angeles Mayor Eric Garcetti on Tuesday sought to reassure the public in the wake of FBI raids at the Department of Water and Power headquarters, announcing that he had pushed out the agency’s top executive months ahead of his planned departure. Garcetti’s announcement came as activists called for more forceful action at the DWP, which has been reeling from a scandal over the city’s response to a disastrous rollout of customer billing software at the utility. “It’s very clear to me that, given the events of the last 24 hours, we need to have a utility that people can trust and leadership they can trust,” Garcetti said in an interview.