Scottsdale Estates resident Mario Torres stands at the edge of the community’s former swimming pool. When it was built in 1964, Scottsdale Estates was one of Southern California’s first gated communities, 600 town homes set on 44 acres with a pool, parks, ball fields and a playground. But by the 1980s, Scottsdale was known for its gangs and drugs. Today, the pool has been filled in, some of the parks are off limits, and it has the highest crime rate in Carson. (Genaro Molina / Los Angeles Times)