By Abené Clayton
When Lucero Herrera stepped out of the San Francisco county jail on a cold, dreary autumn afternoon in 2008, she didn’t go back to the home in the neighborhood where she grew up.
The 18-year-old had served a little over a year in juvenile hall and county jail after a conflict between different street gangs in her community in the Mission District, San Francisco’s historically Latino neighborhood, turned into a violent fight.