You would be surprised just how many children were in the theater the night I went to see this. That bothered me quite a bit..
If I had to take an educated guess, the majority of the viewers were not aware just how graphic some of the scenes were and there was little sugar coating as well.
When my friends heard I had seen it, they asked me if they should allow their kids to see it or their siblings were considering taking their kids and so on, so that tells me not much awareness of the film.
It wasn't for me, but I am sure the film was well liked by others.