WWI may be less cinematographic, but I think it had a larger effect: fascism and communism were both attractive because immediately after the "Great War", the "war to end all wars", people were eager to latch onto alternatives to the systems and political cultures that had gotten them into it (initially they were suspicious of monarchies; later even of capitalist republics; both communists and fascists thought liberal democracies would soon disappear, the former due to incompatibility with the future as revealed by "science" and "philosophy", the latter due to incompatibility with the past as revealed by "tradition" and "action").
I currently think in terms of a "small XX", running 1914-1991.
Originally I'd wondered where to put the 1990s, but seeing as how the Yugoslav Wars (misinformation-stoked fratricidal wars causing massive refugee influx to neighbouring countries) fit the XXI pattern, I'm willing to start it in 1991. (when it ends will not be my concern)
I currently think in terms of a "small XX", running 1914-1991.
Originally I'd wondered where to put the 1990s, but seeing as how the Yugoslav Wars (misinformation-stoked fratricidal wars causing massive refugee influx to neighbouring countries) fit the XXI pattern, I'm willing to start it in 1991. (when it ends will not be my concern)
Lagniappe: https://en.wikipedia.org/wiki/The_lamps_are_going_out