Moderator note: the discussion in this thread should be focused on safe parking options in SF, i.e. specific places where you think it is safe to park. The discussion is diverging into the topics of homelessness and crime in general, which is better done in the Off Topic forum. Yes, the two are intertwined to some degree. I am only pointing out that this thread may be moved to Off Topic.
To continue the discussion of safe parking options in SF, my experience is that at night it is advisable to use a parking structure and not park on the street. Late last year, at 7PM I parked on Martin Luther King Dr very near the intersection with Music Concourse Dr in Golden Gate Park. I was going to an evening lecture at the California Academy of Sciences. On returning to my Model X at 8:45PM I found that a rear side window had been smashed. Nothing was taken from the car (there was nothing visible from that window) and the car was not entered.
Since that incident I have continued to attend evening lectures at the Academy but have chosen to park in the St Mary’s Medical Center parking structure about a mile away. It makes for a nice walk before and after the lectures.
The underground parking below the Music Concourse, between the DeYoung Museim and the Academy of Sciences, is not open in the evening, unfortunately.