In the Soviet sci-fi film "Napoleon Gas" of 1925, there is a secret society, called "Fascist Order Black Klan" in the United States. The order's uniform seems to be similar to that of the Ku Klux Klan except they wear clothing of black color instead of white, and with a huge swastika on it. The order's aim is to destroy the USSR, it has as its (secret) member the US war minister, who illegally produces chemical weapons in a plant, disguising it as an aniline paint and is a member of the "International Fascist League".
It seems from the film, the swastika symbol is closely associated with fascism, including the international one. Is this feature of the film anachronistic and a fantasy of the authors, or does it reflect the realities of 1925?
UPDATE This question is not about swastika being an anti-semitic symbol, but about its association with fascism specifically. As I know, fascist Italy did not use swastika as its symbol and Hitler's party was far from coming to power, so what made the authors use the swastika as an emblem of an American fascist society (that assembled an air unit to bomb Leningrad with illegally produced chemical weapons later in the film)?