New America Media, January 28, 2010 by Franklin E. Zimring
http://news.newamericamedia.org/news/view_article.html?article_id=972db69d1a1e75acf735f4650918ea22
Before the city fathers of San Francisco dance too far out on a limb in claiming credit for good news, the recent experience in Richmond, Calif., should inspire some caution. In 2008, the number of homicides in Richmond dropped substantially—from 47 in 2007 to under 30. This was a very encouraging development in a city of 100,000, where lethal violence is the primary civic problem. But the relief proved temporary, because the homicide toll for 2009 returned to 47.