Word that describes a dramatic change that is visible through similar events
Solution 1:
The literary device you are referring to is contrast which is defined:
a rhetorical device through which writers identify differences between two subjects, places, persons, things or ideas. Simply, it is a type of opposition between two objects highlighted to emphasize their differences.
If you visit the linked site and Wikipedia article, you will see several examples. In the movie, repression (in East Germany) and freedom (in the U.S.) are contrasted with the two scenes.
[Literarydevice.net]