When did you get threatened? What year was that, because people from Serbia now regularly come, talk ekavica, people have crosses around their necks and generally there are no problems (although there are always some idiots).
And I agree that it is always like that, but the game will only make it worse, especially when one team loses. So I'm happy that the chance for that was smaller, although in a best case scenario I wish all the ex-Yu teams could have qualified.