For God sake, TGJ, is that really what you think? That "Serbs hate all Catholics" or "hate Croats because they are Catholic"? That's absolutely crazy! Half my family are married to Catholics and my stepchildren (who I dearly love) and step grandchildren are all Catholics!
The problem between Serbs & Croats is that during WWII, Croats & Muslims under the Ustashi banner and backed by Nazi Germany, went on an evil killing spree against the Serbs, Gypsies and Jews in Croatia and Bosnia. The depravity of some of these murders was so bad, it even shocked the Germans. The Croat Ustashi plan for Serbs was to "kill one third, (forcibly) convert one third to Catholicism and expel one third", and unfortunately much of the Croat Catholic clergy joined in on this "forcible conversion" plan -- and they significantly succeeded, until Nazi Germany lost. But that action was localized to Croatia, Bosnia and Kosovo (the former Yugoslavia) -- not "all Catholics against all Orthodox in the world".
But when the war started in Croatia in the 1990's, one of the first things that happened was that Croats started using the same WWII symbols that had sent hundreds of thousands of Serbs to their death less than fifty years before, and it rightfully scared the crap out of the Serb civilians. Things got much uglier from there.
Unfortunately most of those old WWII Ustashi got away and never faced justice. One of the last Nazis left that even the Simon Weisenthal Institute is trying to extradite as part of "Operatio Last Chance" is a Croat Ustase named Milivoj Asner
The classic Ustase apologetic for anyone who calls them on these horrible crimes is to label their detractors "communists" to take away from the fact that they are literal fascists..
So when I referred to "your Nazi apologist friends" -- I meant that literally.
Russia uses the same Soviet communist symbols today as when they killed hundreds of millions of people in the last century. They even call the removal of such communist symbols by ex-Soviet nations “blasphemy.” You don’t seem too bothered by that though, you are too busy counting on the anti-American support of your Soviet apologist friends in the Kremlin.