Keith, I am originally from Bosnia, and you are talking nonsense. Yugoslavia was not some socialist utopia that lived in Harmony until evil western powers came and destroyed it to make rich, richer. Instead, the country has always had political strife between Serb supremacists who tried to control the control the whole country and subjugate the rest, and non-Serb ethnicities that did not want to be controlled.
It is because of this long term Serb supremacy that Tito decided to divide the country into 6 Autonomous regions, and within Serbia, Tito also created two more autonomous regions to protect minorities there.
Still, within Tito’s Yugoslavia, Serb supremacists ended up taking considerable power withing government, military and intelligence services (which are a LOT more important in communism than in democratic countries since they can basically arbitrarily imprison anyone ).
Being Boshnjak kid in Bosnia meant asking myself why is my name weird since all the literature taught in school, as well as all the TV shows, featured Serb characters. You end up learning Serbian culture, featuring brave Serbs being oppressed by Turks (which is what Bosnjaks were called, as well as actual Ottomans). Often time poems were about bravely attacking a ‘Turk’ wedding celebration and killing everyone as if this is something to be proud and promoted.
At the same time, on the street level, jokes about ethnic stereotypes were promoted among kids, so in those jokes, Bosnjaks were stupid, Montenegrins were lazy, Croats were dishonest, etc.
The war itself was not something that just happened, but was planned for years in secret in preparation for ethnic cleansing of non-Serbs. The Guns that bombed Sarajevo were dug into their positions around the city well before the war. There newly constructed residential buildings with hidden sniper nests built for war. There were cement fortifications built in secret before the war, and so on.