Go a block or so inland and it gets starkly worse, especially as you get closer to Market. You ain't having fun in San Francisco until you make eye contact with a guy "dropping a bomb" in broad daylight at Sue Bierman Park, or have your car broken into near Levi Plaza because someone wants to try to steal your jumper cables (and fail, in my case, as evidenced by them hanging out of my now-significantly-more-aerodynamic quarterpanel window).
And the stench. Nothing like the glorious smell of ocean breezes and human excrement in the morning!
And to think the Embarcadero is relatively clean by SF standards. The Tenderloin is where it gets real fun.