Being at a football game this weekend was pretty much the only chance you would get to sing the national anthem in a crowd to pay your respects to a person who has given their life to serve a country. No one but no one is standing up at home to sing it, and no one (football fan) outside of the home counties is going to London to do it either.
To deny ten of 1000's of people the chance to do that is really shocking based on what a couple of rag newspapers would say. I know it's probably not the only reason, but to even have that as a legitimate concern is beyond the pale for me.