I have to say that seeing the St. George's Cross everywhere really annoys me, given that so many probably aren't genuine football fans and just get carried away with the patriotism bit. The World Cup to me is all about the united colours of football...not division and kneejerkers.
I think some people genuinely believe that by having an 'Ingerlund' flag they are sticking two fingers up to some imaginary 'politically correct' order that they perceive constrains them, too. All bullshit of course like the moaning about 'how it's alright to have a St. Patrick's night but not St George's.' Hmmm. Anything interesting in the Daily Mail today?
There are also quite a few who put the damn things up, World Cup or not and I personally believe they deserve a slap for behaving like chavs.