The reason that Letterboxd has reached full capacity on reviews where dudes tell you whether they think this movie should exist is that as a hostage/active shooter/terrorism film, this is a pretty great movie... it just feels icky to say that. So I'm going to move past that and just tell you about the film.
The movie focuses far more on atmospheric intensity than educational value. The performances are all fantastic, the tone is tense, the sentiment relatively progressive (that's not really the point of this film though), the script is well-written, it's shot really well, etc. It feels effectively terrifying in a way that has stuck with me in the hours afterwards.
It's up to you if you want to see it, if you choose to it is pretty good.
-2019 Ranked: boxd.it/2lsbC