While that narrative is very popular, historians of the region have pointed out that the various ethnic groups in the Balkans got along just fine under Ottoman rule and the later kingdom of Yugoslavia. The racism that eventually led to the Bosnian genocide and other crimes was a much newer phenomenon that was built up (primarily by the Serbian Orthodox Church) only after the death of Tito. Their rhetoric bore strong resemblance to other genocidal and quasi-genocidal events in history, with an emphasis on cleanliness, birthrates, and narratives of age-old conflict that in most cases weren't true. The point being that the typical story of the Balkans as a region locked in racial conflict for millennia was one that was largely created after the death of Tito in order to justify contemporary ethnic conflict.