Whenever state was dominated by Serbs is debatable, given that Tito was Croat. I would argue that communism did us all great deal of damage and that Yugoslavia was mistake.
But implying that Serbs committed atrocities against other people during peaceful times is simply not true. Once civil war started, atrocities were committed by all sides, not just Serbs. I have lost family members in war and I have friends who as kids had to escape from Sarajevo in early days of war to save their they lives (while their only crime was being born as Serbs).
Unfortunately, today everything is presented in simple black/white, good vs bad guys way without ever scratching under the surface.