Rage Against The Machine is my second favorite band after Aqua. Anyways, here is the explanation:
In early December 2009, English DJ Jon Morter and his wife Tracy launched a group on the social networking site Facebook encouraging people to buy the Rage Against The Machine song “Killing In The Name” in the week running up to Christmas in order to prevent the winner of the X Factor television show from achieving the Christmas number one slot in the United Kingdom for the fifth year running. On December 15, the BBC reported the group had more than 750,000 members.
After the creator of The X Factor, Simon Cowell, publicly denounced the campaign as “stupid” and “cynical,” the group gained more attention and went on to be mentioned on various UK news channels, radio stations and websites. Rage Against the Machine added their support to the campaign. Guitarist Tom Morello said that achieving the Christmas number one would be “a wonderful dose of anarchy” and that he planned to donate the unexpected windfall to charity. Many musicians and celebrities supported the campaign.
On December 20, 2009, BBC Radio 1 revealed the song had successfully reached the number one spot, selling more than 500,000 copies and being the first exclusively download-only single to be Christmas number one in the process.
So what may have likely happened, is the ice rink was playing some sort of top Christmas songs playlist. Since Killing In The Name was a Christmas #1, this song came on.
Nothing like a song with lyrics that repeat “Fuck you, I won’t do what you tell me” 16 times to really get the family and kids in the holiday spirit!