Schaut auf diese Stadt (Look at This City) It is an East German movie directed by Karl Gass in 1962.
Insinuating that East Germany requires an "anti-fascist defense" against the West Germans, the film depicts the city of Berlin following the end of World War II and the struggle between the split between democracy and communism.
The film uses authentic footage from newsreels and images from both sides to justify the erection of the Berlin Wall on 13 August 1961.
Therefore, this became a global issue because the USSR and the United States of America were trying to impose their spheres of influence on nations.
Berlin was in the crossfire between capitalist and socialist influence, and it ended up splitting the city between East and West.