I did a class in college about the history of holocaust in film & literature, and one of the things we learnt was that it's impossible to make an effective holocaust movie because it will always inherently be entertainment first & foremost by the very nature of the medium; the only real exception they highlighted was Shoah, the 9 hour documentary. By presenting this story as an almost esoteric art-piece, Glazer sidesteps a lot of these concerns and makes something truly powerful imo. It’s a movie that asks a lot from you, but it only makes the payoff that much more harrowing