A new documentary dives into the history of "SantaCon", the annual tradition around the globe where revelers dress in festive costumes and participate in bar crawls. While thousands of participants join in with enthusiasm each year, many locals dread the day a sea of Santas comes to town. NBC News' Ellison Barber reports on the controversial Christmas tradition. For more context and news coverage of the most important stories of our day, click here: nbcnews.com » Subscribe to NBC News: nbcnews.to/SubscribeToNBC » Subscribe to Here's the Scoop podcast: nbcnews.com/heres-the-scoop-daily-podcast Every day, NBC News helps people understand what’s happening and why it matters — through fact-based reporting, meaningful conversations, and powerful stories. From its leading news broadcasts — TODAY, NBC Nightly News, Meet the Press, and Dateline — to NBC News NOW, the 24/7 streaming news channel, plus chart-topping podcasts, the NBC News app, and NBCNews.com, N...