Divisive elections and political debates, horrific shootings, angrily defended positions on issues like gun control are all part of the history of 2012. But beyond those headlines, there's another way of looking at the year, and that's through the lens of community-building. Americans found new ways to re-define and rebuild community this past year, from their responses to disasters to virtual social media networks to grass-roots efforts in places like Detroit. How does our sense of community shape our sense of ourselves? What does the year tell us about who we are and who we're becoming?