Artist/activist J R exhibits freely in the streets of the world. Known for plastering cities with huge black-and-white wheatpastes of the people who live in those cities, J R came up with the idea for Inside Out after winning the million-dollar TED Prize in 2011, and was asked to make a wish. His request: to assemble a global social network of sorts, on the street, in which people have their pictures taken as part of what he hoped would become the...