Great article about the people who find their way to the Tenderloin and call it home:
http://www.nytimes.com/2015/01/09/us/in-san-franciscos-tenderloin-a-move-to-help-artists-as-wealth-moves-in.html?hpw&rref=us&action=click&pgtype=Homepage&module=well-region®ion=bottom-well&WT.nav=bottom-well