You could have easily left out “ultra-nationalists” from that first sentence/paragraph. Seems like that’s what you really wanted to say. That’s what most people will get from it anyway. Serbs and rape-camps, genocide and ethnic cleansing in the same sentence. There’s that familiar sentiment.
This looks like the same language Trump uses when he talks about Muslims, or Mexicans, or whatever racist bullshit he’s spouting. Trump himself would be proud by it.