San Francisco Chronicle, August 30, 2011 by Chip Johnson
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2011/08/30/BAS31KTC6V.DTL
Professor Franklin Zimring, a recognized expert on crime, said Quan’s plans are based on resources the understaffed Oakland Police Department doesn’t possess…. A curfew is an effective tool for street management and, contrary to the mayor’s opinion, there is “no legal barrier to a legitimately imposed curfew,” he said.