When it comes to the topic of Croatia specifically, never, ever trust Bokababe for instance. She's been corrected time and time again with facts, only to conveniently forget them the next time so that she can repeat falsehoods.
The admitted grandson of an Ustase speaks!
Dio is right --don't trust me -- just put the words "Ustase" or "Jasenovac" into any search agent and see what you come up with. Better yet, try "Milivoj Asner" because he has been in the press lately
If you want to defend that literal Nazi ideology just because they are "Catholic, too", then at least you will know what you are doing.
The fact that the symbols used by the Ushtase were in use for hundreds of years prior to their use by the Ushtase doesn’t change the fact that they became so tightly associated with the ushtase that they gained a Nazi connection. The swastica was also an ancient symbol and yet it cannot be displayed in Germany or the western world today without having a Nazi connotation. So, when the Croatian’s started to display these hated symbols again it is no surprise that Serbian civilians reacted just like Jewish civilians in Germany would react if the Germans took to flying the swastica again.