I know that this movie is 3 years old. I am just now getting around to seeing it.
In 1967 a teacher in California named Ron Jones was asked by a student if the Holocaust could happen here. To answer him, Mr. Jones did an experiment with the students. Within 4 days the conformity and fascism displayed by the students became scary to the staff and locals.
Die Welle is based on the experiment, asking could the Nazi Regime happen again in Germany. To date, I feel that this is the best version of the experiment that happened so long ago.
It shows how a normal situation and normal human behavior can, disturbingly, move easily and unnoticed in to fascist and dangerous behavior. Things that we have seen and heard in the last few years or so, that we now see as acceptable are portrayed in this film. It takes you through the mundane steps and acceptable social behavior used to create a dictatorship.
"Strength through discipline, strength through community, strength through action, strength through pride." Was the motto that Mr Jones used in 1967
I rarely recommend movies, unless you ask me my favorites. However this one I do.