From the article:
Kids under 17 would have to be off Chicago streets by 10 p.m. on weekdays and 11 p.m. on weekends, under a curfew rollback proposed Tuesday by Mayor Daley to stop the epidemic of youth violence.
Daley wants to turn back the clock by 30 minutes to prevent what happened last year, when 24 Chicago Public Schools students were gunned down. Chicago's homicide rate stands at a 40-year low. But, all too many of the 442 murder victims in 2007 were young people.