SF has turned into a homeless hell hole.
Everywhere you look you will see broken glass next to the curb, from where a smash and grab tool place.
Anywhere that tourist go, the activists move in to grab what they can.
The truth is that San Francisco is now a cesspool and you are wise to avoid it like the plague.
See the link to the infamous poop map ... a once proud City by the Bay (Human) Wasteland