I was surprised to find the topic “Soviet Swastika” being discussed on different pages on the Internet. Some used the visual evidence as illuminating proof for the sinister identity between Communism and Nazism. As other observers have already noted, the puzzling use of the swastika symbol by Soviet military is however not that difficult to explain.
The explanation is not shared fondness for totalitarianism, but the fact that the insignia was designed for Kalmyks fighting in the Red army. The Kalmyks are Buddhists and the swastika a well-known emblem for that creed. Thus, the explanation is some kind of Bolshevik tolerance, rather than totalitarianism.
* Images taken from the linked pages.