Other anti-crime measures might more effective, experts say, and avoid the downsides of policing. : In liberal Portland, Ore., which is facing its most violent year on record, the mayor announced a plan on Wednesday to put 200 more police officers on the streets. His announcement came a day after voters in Atlanta and in Seattle signaled their support for mayoral candidates who promised not to roll back the police force, but to expand it. In Maryland last month, Gov.