Ustashi

Jasenovac – the Glossed Over Auschwitz of the Balkans

Unfathomable as that may appear, yes, it was quite possible for the second-ranking slaughterhouse in Europe in recent memory to have slipped off the radar screen. Even such a renowned authority as Professor Gideon Greif is having an exceptionally difficult time of it in trying to put it back on.
Precisely because it has not been the theme of any Hollywood spectaculars, Jasenovac does not attract any school excursions and textbooks are largely silent about it. Some background information on Jasenovac therefore seems like a good place to start.