How the hell can you count Milosevic's Serbia as either truly communist or socialist. It was multi party state with regular elections (yeah he cheated, yeah he got caught and payed the consequences every time he tried, lack of Slobo's fall in '97. was mainly do opposition being split and involved in petty squabbles. And there are implications that Democratic West (tm) didn't want Slobo out of office untill Kosovo gained independence as that would have been a bit more difficult with pro western oppositon taking power), he got elected on multiparty elections and got ousted by the same. Also a country involved in civil wars in two neighboring former Yugoslav republics, with extreme involvement of organized crime in politics in all three sides/states during the war.
And you are counting total victims of a three sides civil war as "victims of communism". How can "communist" (And it most certainly wasn't. Yes it was a oligarchy and cleptocracy with very little rule of law and very dubious democratic process) Serbia under Milosevic be responsible for deaths in Muslim (beg your pardon, Bosniak) Croat conflict in Bosnia that lasted for over 2 years until Clinton convinced them to stop it and shut up as it was problematic in light of media effort to put any and all blame on everything on Serbs? To be clear, I'm not saying none of casualties are Serb responsibility, far from that. I'm just outraged at you putting the blame for all casualites in a three sided war to single side.
And 1 second of googling tells that SFRY is Socialist Yugoslavia. There were gross crimes committed at the very end of the war (WWII to be precise) where new communist regime was still consolidating power. But incomparable in magnitude and scope both in absolute and relative numerical terms to Stalin's or Mao's crimes. There were purges and detentions of Stalinist symapthizers and agents in '48. that lasted couple of years (although with very little executions and death)