There are two parts to my comment: one is a historical perspective and the other concerns matters of faith.
One has to know the background of this abomination, for the lack of a better word. It's called: communism. It was a policy of communist authorities in the former Yugoslavia for approximately half a century to relativize and even ridicule anything that had to do with ethnic identity. The regime was not openly hostile towards religion, but religion was looked upon with scorn and even disdain as something reactionary (read: anticommunist), backward, superstitious, and so on.
Generations raised under such a regime have maintained but a skeleton of their religious identity, often retaining it on paper more than in praxis. Traditionally, religious observances were morphed into state-observed secular holidays (thus a New Year was a Christmas-like holiday without Chirst in it, while Christmas was a "private" observance).
Needless to say, liturgical life was not highly favored and was generally subdued. People who were very religious were usually considered as "zealots" or even "extremists." The Serbian Orthodox Church was in particular identified as the source of animosity towards the regime, a sanctuary for the "nationalists," and was, like the Church in Russia, heavily infiltrated by communist agents, so much so that even the Patriarch was at one time suspected of being one.
The Serbian community in Diaspora for that reason formed the so-called Free Serbian Eparchy in America, Australia and Canada, in full schism with the Patriarchy in Belgrade, the way the Russian Orthodox Church Outside of Russia (ROCOR) was created for the same reason several decades earlier, following the Bolshevik Revolution in 1917.
Much more importantly, was the communist official policy known as the "Brotherhood and Unity." Intermarriages across ethnic lines and religious backgrounds were encouraged and lauded. Everyone was supposed to be a nondescript "Yugoslav" (even those who did not fit the bill because they were not ethnic Slavs [the name Yugoslav means Southern Slav]).
Unfortunately, the disease introduced by the communists still persists. This is why such abominations that you describe being practiced in Voyvodina are not surprising to me but they ought to be to the world.
For one, marriage is a sacrament a holy mystery, of union of a man and a woman by God. You can't be married in one church and then say God didn't do it "equitably" until He marries the couple in the other church!
Your lack of faith or upbringing in faith is perfectly clear which is why you probably do much better on political forums.
Secondly, being "double-baptized" is a heresy, always has been, for the last 2,000 years. I honestly do not believe that the priests know that the couple has already been married in one church or that the baby has already been baptized in the other.
If they do know, and still perform the sacraments, I would like you to tell us which churches in your sunny Voyvodina are doing that so that I can write to their bishops and ask them how is that possible. Much obliged.
Discuss the issues, do NOT make it personal.
Kosta, just as a matter of clarification, I wasn't double baptized. But I was brought up, as I have said many times, with a foot firmly planted in both churches and cultures.
Thank you! Not sure how the Orthodox handle it, but we Catholics are (supposed to be) so adamant that a "double Baptism" is a blasphemy, that we "conditionally" Baptise any convert whom we even suspect might possibly have been Baptised in the past.
It goes something like:
If you have not already been Baptised, then I Baptise you ...
I allmost completly support what you said about religious life under communism. Iguess it was much easier for me cause im Serbia-hungarian origin. I van remember that my "fullblooded" Serb friends hade noclue about religion whatsoever. I remeber one time I simpley asked a kid, "What present you got for Eastern?" and he asked back "What is Eastern?"
As for double-baptisment, I have no clue that is herecy. i know that my father and aunt are baptised in Catholic and Ortodox churches, also som eof my friends are married in both churches, and that is custom, in some casess here. i will ask where exactly were those performed.