It can lead to strong competitive mindsets from the fans and players, which intensifies the emotional side of sports- it’s kinda like patriotism. Being proud of where you come from and the team that represents that place, and when that is disrespected by another person from another place, it then sets an aggressive mood leading to mire negative and intense competitive spirit
Step away from Christina, apologize and ask her to talk about it. I mean that's not personally what I would do per say, but I'm sure that's the answer they're looking for