I stayed in a hostel in SF a few years ago and this guy showed me video he shot of a crazy guy on the corner in some busy street in SF, pulls out a gun and star

I stayed in a hostel in SF a few years ago and this guy showed me video he shot of a crazy guy on the corner in some busy street in SF, pulls out a gun and starts firing at people. Next to him. I'd call that a threat to personal safety. I don't have any other second hand accounts of violence but I imagine there would be some between the gangs, police, homeless and residents. Frustrations boiling over leads eventually to assaults