In 2009, San Francisco saw a significant drop in homicides from the previous year, with the number falling from 96 in 2008 to 45.
At the time, newly sworn-in Police Chief George Gascón credited the change to a revitalized enforcement strategy started by his predecessor, Heather Fong, that targeted high-crime neighborhoods such as Hunters Point, Visitacion Valley and the Western Addition. The homicide unit also had expanded from a dozen detectives to 30, and Gascon introduced a new statistical analysis method that tracked crime more closely and aimed to hold district captains more accountable for results.
In 2010, department statistics show 7,139 violent crimes were reported in San Francisco. That followed a 10 percent drop in reported violent crimes in 2009.
Read more at SFGate