Surely the rule is that you have to be another Balkan state/prinicpality/ethnic group before bashing your fellow Balkan?
Well as a member of the croatian nationality i would like to mention the utter absurdity of this. It makes sense to have everyone speaking the same language, but everyone knows that you start off by indoctrinating the immigrants children. Gosh, does anyone study the 1900's immigration to America.........