... let’s skip the politics...
Here's the best suggestion. If I want a political argument, you can hardly turn anywhere without finding one.
Sports has long been popular precisely because it transcends politics. That's why, for example, the Olympics were created, both in ancient times, and today. When two athletes meet on a sports field, rather than a battlefield, they aren't "Country A" or "Country B", and they aren't "Liberal" or "Conservative", they are merely athletes, competing, and they leave the field with respect for each other, and perhaps new friendships. Why can't fans be the same?