Out of curiosity, how does one avoid getting knifed by a junkie in the alleyway?
But the article here is how this was some conflict between friends, so the city doesn’t really matter. All the fearful people should be reassured by this outcome. Manage your domestic life well for good safety outcomes.
If you want to get a good feel for San Francisco ghetto logic, or ghetto logic in general, I recommend the excellent, but hard to get a hold of documentary, "Straight Outta Hunter's Point" (2003).
Give me the risk any day.