Re the swastika....
Conflict in the balkans has gone one since forever. In WW2 the nazis took advantage of that & there were SS divisions from Croatia. They wouldn't have been manning the gas chambers or even interested in the ideology, they were fighting against their enemy. After the war general Tito managed to galvanise the factions & created Yugoslavia, but after he died the whole thing disintegrated & we all know what happened. People there have endured mass murder so if they're not as politically correct as we are, then it is what it is. No different to people in Northern Ireland showing support for the IRA or UDA.
So not excusing it, but just think yourself lucky that "ethnic cleansing" is something we hear on the news, not a daily reality.