Croatian fans perform longest fan wave during the Kontinental Hockey League (KHL) ice hockey match between Medvescak Zagreb and Russian team Vityaz Podolsk at Arena Zagreb in Zagreb, capital of Croatia, December 29, 2013. More than 15.000 Medvescak Zagreb fans set a new Guinness world record in longest so called "Mexican fan wave" with 15 minutes and 3 seconds breaking current record of 6:54 seconds that stood from 1986 during the Mexico vs. Brazil match in Cowboy Stadium, Texas. (Xinhua/Miso Lisanin)