Just take a drive downtown. I had the most unpleasant opportunity for a major business deal meeting there. The other party was from the East Coast and had never been to San Fransisco. They insisted a trip down at Fisherman’s Wharf for lunch and a short tour so they could see the Golden Gate Bridge. I advised them not to since we had a nice comfortable meeting place at the hotel by SFO. They were astounded at how filthy and disgusting it was downtown. I use to go as a kid to visit family and remember it being clean, fun, and safe (for the most part). The place is absolutely disgusting now.
We can thank Nazi Piglosi for that.