Saturday's much blogged-about American Apparel protest outside the storefront the chain plans to move into on Valencia Street had a sadly low turnout. Perhaps they were asking a bit much (10 a.m. on a Saturday morning?). Photographer Gretchen Robinette arrived at 10 on the dot and says that protesters started trickling in past 11. Click here for her photo set. Meanwhile, at nearby Mission and 18th, Hanna Quevedo (the latest photog. to join our All Shook Down family) and her well-traveled lens do