If you get a chance to become a paid referee for recreational leagues, you get the see the karate and kung fu in the Korean leagues. If they have alot of Asians in your city. They fighting like a mix of WWE and the old kung fu fliks. There's alot of leagues in/near major cities, my full black African cousin played in a Mexican league in the midwest.
The fought alot over matches in the Korean leagues. One of them called a friend(he was a ref) of mine the N word in Korean and the other team snitched on him. He banned that player for the rest of the season, and those teams got in a small skirmish.
There was one coach that was a nemesis of my friend, but they had promised to try to get along. Before the game the coach came over to him, my boy was like "The game hasn't even started and you're bringing complaints?"
The coach was like "no no no, I just wanted to warn you to watch out for the other team, they like to pull hair, and trip alot"
Hilarious!