Borussia Dortmund fans hoist a giant banner, celebrating the club's one hundredth anniversary. The initials refer to the club's full name, Ballspiel-Verein Borussia 1909 e.V. Dortmund . BVB won 1-0 over Freiburg. December 19, 2009.
Photo credit: clickraa on Flickr, via the Pitch Invasion Photo Pool. For more on the origins of Borussia’s name, see Jeremy’s recent excellent post.