San Francisco Chronicle, January 2, 2009 by Demian Bulwa
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/01/02/MNEN1515TC.DTL&type=printable
“What you’re seeing here is an outgrowth of chronic problems,” Zimring said. “We never solved the problems—chronic unemployment, gun availability, community disorganization. It is much more likely that what we’re seeing here is a slightly more concentrated edition of the chronic problems we’ve been having for decades in these cities, rather than something new,” Zimring said.