If there is one thing that everyone knows about Japan by now, it’s that its travelling football fans take enormous pride in clearing up after themselves.They turn up waving “Japan Pride” bin bags that function during the game as banners. Later, when stuffed with post-match detritus, the bags become a tool of stadium-based statecraft: the supremely dignified visitor, respectfully dignifying the host.Financial TimesSubscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles