Nothing wrong with waving the flag of your home county. You don't have to come here and root for the USA (or wherever, it's just where I live) when we duke it out at international events, and you can always be a part of that country.

But yeah, you are if our house, so if you're going to live here, you'd better try to fit in, learn the rules, and not disrespect us for not being your country. That's the point.