While bird watchers and joggers passed by, the Arcata Police Department and homeless advocates were locked in a showdown adjacent to the Arcata Marsh and Wildlife Sanctuary on South I Street last week. Activists made their stand at "Camp Aerial" - a plot of City property west of the Little Lakes Industry development site. Events were punctuated by the delivery and removal of a B & B porta-potty, and culminated in the arrest of homeless advocate and self-described "Free" Tad Robinson on Friday afternoon. Monday, the activists set up a formal, if illegal, camping site with tents, an information table...