I've lived in SF for almost 10 years, and it saddens me to live in such low trust community because of all the crime. It changes people.
I've had my car stolen once and broken into several times. I've had two bikes stolen, once out of an office building, and another time through an iron gate that blocks my doorway. My neighbor had his motorcycle stolen out of his garage. I've caught someone stealing packages from a building I lived in. Last time I moved, someone tried to break into my U-Haul. I've seen people walking out of several stores with bags stuffed full of stolen goods (going to Westfield mall feels surreal—even inside the mall, shops need to hire their own private security to protect themselves).
These are just a few incidents that come to mind—I could list many more. My point in listing all of these cases is to say—it's not enough to look at crime metrics. Not to say that we shouldn't look at metrics and try to improve them, but the current metrics are flawed to some degree. People in SF-proper (e.g. mid-market, SoMA, Mission, Haight) are living with a constant low-to-moderate anxiety that they will be robbed at any time.
In all cases that I've been close to, there have been no arrests or prosecution. You won't find that I had to chase away someone trying to break into my U-Haul in any crime statistic report. No one from SF is comfortable leaving anything in their car, leaving their garage open, parking their bike outside.
All I want is a candidate to run on the platform of simply enforcing the law—it's baffling to me how controversial that is. Perhaps we'll get the right catalyst for that to happen someday.