For an organization that wants us all to live more lightly on Mother Earth, Greenpeace sure has a lot of stuff. Cases of humpback whale costumes and a forest-green ambulance marked Climate Emergency Response. Inflatable boats and a two-man airship. Handcuffs, 70 purple umbrellas and a climbing wall where protesters train before rappelling down the headquarters of corporate America. Decades worth of props are housed in a fading yellow warehouse in San Franciscos Dogpatch, an industrial neighborhood squeezed between a freeway and a shipyard. Wandering through the cache is a lesson in environmental history Greenpeace style. The cluttered warehouse is the West Coast prop room for the groups theater of dissent the kind of nonviolent protest on display of late with much of the Occupy movement.