I think some critics may think the movie glorifies mass shooters or that "type" and so they're seeing it through that lens. I just saw it and I loved it. And I don't understand ppl yapping about the horrific violence. There were a couple of scenes but the bulk of the movie was not blood and gore everywhere. There are some action movies where dozens of ppl are killed by the end of the movie, and don't get me started on the Saw and Hostel movies.