If you leave that aside, you have a solid, dense, exciting and - for that sub-genre (skin-hooligan-drama or whatever you'd call it) - a few quite(!) novel ideas. The acting is - in my humble opinion - very good, the characters are all believable, the story is interesting although a bit short and therefore compressed, but overall very good. All characters are, if not likable, then at least understandable in their actions, which is vital for a drama to work. An open minded viewer assumed, but I guess you're not reading this if you're seeking for another comedy.
For a laughable (nowadays *sigh*) budget of 500k it's an excellent work. Hollywood doesn't even manage to release a believable porn-movie with that budget ,-)
Also I really liked that no side is taken in a shallow way. You get hit in the face by the quite decent brutality (think of the budget!), the social background and the political system (isn't it the same everywhere anyway?). The placing of real footage for less subtle shocking reasons was well placed and fit well.
This was my second Serbian film. The first one being "a Serbian film" I didn't knew if I could expect anything decent. But "Skinning" has class and is a totally serious drama. I would say that I liked this one the most of all these skin/Nazi/hooligan-flicks like "Romper Stomper" or even "Hooligans" or the lesser known works.
I usually don't write reviews, but I saw this one hasn't any but it deserves at least one good because of it's comparably low voting. Judge for yourself! If you enjoyed "Hooligans" or anything like that, you'll enjoy this one too. Well at least in the same way you could "enjoy" war-movies, you know what I mean.
For your better valuing of this review: I'm German, male, around 40, seen thousands (literally) of movies, like most genres (instead of romance, sport and most comedy) and am getting more demanding in a cinematographically way every year :)
And before I forget: If you're into violence but cannot stand naked people: There is at least one quite graphic sex-scene. So maybe skip that one :-)
From me, a solid 7,5 with a tendency upwards.