*The basis for the documentary Join or Die—now streaming on Netflix!*

Updated to include a new chapter about the influence of social media and the Internet—the 20th anniversary edition of Bowling Alone remains a seminal work of social analysis, and its examination of what happened to our sense of community remains more relevant than ever in today’s fractured America.

Twenty years, ago, Robert D. Putnam made a seemingly simple observation: once we bowled in le...