The man who hosed down this woman is scum. I understand the frustration he might have felt, but to dehumanize someone like this is just...well, it's pretty fucked up. I don't pretend to be an expert on the solutions to these problems, but we, as a society, must try something different....because what we'e been doing hasn't been working.
Now, one of the issues with SF and maybe many parts of California, is that there is an incredible amount of NIMBYism. And, I'm not even talking about people being concerned with affordable housing or shelters, it's for everything from luxury condos to townhouses. Its a major issue, where a few sticky wheels can delay or kill any planned projects...which exacerbate the housing issues in the area...