In an interview with The Wall Street Journal, one of the show's co-creators, Tom Tykwer, spoke about the era:
“At the time people did not realize how absolutely unstable this new construction of society which the Weimar Republic represented was. It interested us because the fragility of democracy has been put to the test quite profoundly in recent years... "
In the first season, Communists, Soviets and especially Trotskyists play a prominent role (the Soviet ambassador to Germany from 1923 to 1930 was former Trotsky ally Nikolay Krestinsky). The show depicts what became known as Blutmai, violence between Communist demonstrators and members of the Berlin Police in early May 1929, and extra-legal paramilitary formations promoted by the German army, known as the Black Reichswehr. In the first season, the Soviet ambassador in Berlin, who appears to be a loyal Stalinist, is involved in the massacre of Trotskyists in the printing shop, who were buried in a mass grave outside the city. According to Nathaniel Flakin, this event never happened.Nazi Party leader Adolf Hitler, on the other hand, is only mentioned in passing during the first two seasons of Babylon Berlin.