It is just about possible that I was being facetious.
But if we're talking professional clubs and large ones at that, I'd like to point out that most clubs are not politicised (England, for instance, doesn't even have a tradition of political football clubs; even when there are multiple clubs in the same city politics is not an indicator of support) and most fans don't regard supporting their club as a political act. You also have to be careful not to assume that all fans of a particular club have the same attitudes as the various hard-core fan subcultures; this is often not the case at all. Never forget that Richard Attenborough supported Chelsea.
