Since nobody mentioned it yet:
Fields of Athenry - Ireland v Spain, Gdansk, Euro 2012"The true measure of a man is not where he stands in moments of comfort, but where he stands in times of challenge and controversy."*
Spain defeats Ireland 4-0, Ireland flames out of the tourney, but Irelands fans show the WORLD how to be real fans.
The song is “The Fields of Athenry”, about a man who was caught stealing food for his starving family during the Great Irish Famine and exiled to Australia.
They’re singing the chorus:
Low lie, The Fields of Athenry
where once we watched the small free birds fly
Our love was on the wing
we had dreams and songs to sing,
It’s so lonely round the Fields of Athenry
(please don't anyone call me a sexist, Shakespeare really wrote the words as "man")