Which actually makes it appear way louder than it is ... well it is likely that that will be the case - so no pun intended. The movie may have an issue with some - especially when it comes to the psychologically brutal scenes - bullying is not fun at all. And seeing that happen to someone, may make you feel a lot of anger and other negative (understandable) emotions.
So it will be tough to find a person to root for ... and even when you find one, you may find yourself changing opinion ... we all have done stuff we may not be too happy about. Fret not though ... I think there is at least one character you will find morally good ... if that is what you are looking for.
Of course just because you have (at least) one here, doesn't mean they will end up on top ... this has quite a lot of twists and turns ... and goes back and forth timeline wise ... but it works like a charm. ... if you let it that is! Suspend your disbelief and just watch this for the crime thriller that it is ... really well done, flaws and all included.