Red Devils in Seoul Plaza during the 2002 World Cup
The "Red Devils" are such huge supporters of the national team that they have often been called the "12th member" of the team. Here's some video footage of the passionate fans!
I'm not very into sports but I think I would HAVE to go be a part of this if I had the opportunity at some point. It looks like a lot of fun, and has such cameraderie involved! I love that they even clean up as a group afterwards:)