Meanwhile, I (a person with no car so I walk and bus everywhere since my neighborhood isn't cool enough to get light rail...ever) barely see any of what they describe. Yes, there are a handful of tents around freeway onramps. Yes, the trash looks a little unsightly. Yes, I wish it wasn't there. But I've not once been attacked and I rarely see a syringe or even a hint of what looks like poop (statistically, it's probably dog poop given the scourge of terrible owners of dogs in this city).
So I'm not discounting that something happens sometimes, but damn, not on the level that the screaming hysterics seem to think it does.