Russian criminal tattoos - Wikipedia

Up until World War II, any tattoo could denote a professional criminal, the only exception being tattoos on sailors. Under the Gulag system of the Soviet era, laws that were implemented in mid-1940 allowed short prison sentences to be given to those convicted of petty theft, hooliganism, or labor discipline infractions.…

Red star - Wikipedia

A red star became one of the emblems, symbols and signals representing the Soviet Union, alongside the hammer and sickle. In Soviet heraldry, the red star symbolized the Red Army and military service, as opposed to the hammer and sickle, which symbolized peaceful labour. [citation needed]…