This blown-up black-and-white image is a fitting street-art tribute to the late great actor-comedian Robin Williams. The photo adorns a construction-site hoarding next to a popular book shop in the Mission District of San Francisco, where Williams had lived for many years and where he spent his early career working the local stand-up comedy club scene. In the photo, Williams is young, bearded, almost feral with a poignant, restrained intensity. In context of the city’s visual clutter, the image manages stands out.