Verso: blue ballpoint pen inscription :Demonstrators + boulders blcking 7th St. at Bay St." 3 purple stamps: "May 17 1972 (2), Bill Crouch". Image: The photograph shows a line of protestors walking in a semicircle around some large boulders that have been put in the middle of a wide street next to a freeway. Some protestors are holding signs, one saying "Blockade Nixon". One man in front is wearing striped pants and is smoking. There is a billboard in the background advertising Cool cigarettes.