Lol. Serbian, Croatian, Bosnian and Montenegrian fans tend to insult the other team's fans by using political history (just like with the Swastika). We tend to go verry deep at times.
When Spain came to play in Bosnia, we chanted pro-Basque country and pro-Catalonia songs. Serbs did the same.
We even chanted for that province in Belgium who wanted to form its own country when they came in Bosnia.
But my favourite of all time was when the Greeks came in Bosnia. During the whole 90 minutes, every time a Greek touched the ball, everyone chanted "Bisexuals, Bisexuals".