I appreciate that in this country, people are treated equally by the law regardless of where they're from. My parents owned a home in Spain, and courts would side with the locals if there were ever any disputes. There was no equality there. We have a good sense of fair play in this country. We...
I seem to remember Man City fans booing, but not at a national anthem, rather at UEFA's anthem. So UEFA were defending themselves, not general etiquette.
How often do UEFA charge fans of countries booing the national anthem of other countries?