This movie taught me...
In the 60s, Americans did not torture captured enemies (they do now, but they didn't back then) and were very gentle and respectfull, while soviets were all about torturing Guantanamo style.
America is all about the rule of law.
In the 60s, american lawjers and judges did not have butlers and nobody (no blacks) did dull jobs. Meanwhile, in the DDR, 90% of the population were sad and very submissive janitors. Really: janitors everywhere in the DDR, not one in the US.
In the America of the 60s, people talked to each other in a very uninformal, direct, way, while in socialist countries everyone was submissive or aggressive, always a bit robotic.
In the US, you could criticize a sentence, in USSR you had to stand up and clap your hands.
A side effect of socialism is colour deprivation: when a country turns to socialism, everything and everyone becomes almost grey.
An other side effect of socialism is bad weather, very bad weather.
Soviet "partisan borderguards" beat random people to death.
If you passed by the berlin wall you were very likely to see people getting shot. That's something that happened every day, many times a day.
Oh, yes: "East Berling was walled off".