Die Welle
Germany today. During project week, high school teacher Rainer Wenger (Jürgen Vogel) comes up with an experiment in order to explain to his students how totalitarian governments work. A role-playing game with tragic results begins.
Starring Jürgen Vogel, Frederick Lau, Max Riemelt, Jennifer Ulrich, Christiane Paul, Elyas M'Barek, Cristina do Rego, Jacob Matschenz, Maximilian Vollmar, Tim Oliver Schultz
Watch "Die Welle" on Tubi TV released in 2008. It's a drama and thriller movie, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of movie, and is currently available to watch for free.