An excellent Russian documentary on this topic is "The Mark of Cain" [0]. It goes into a lot of detail and interviews with prisoners, as well as a good portion

An excellent Russian documentary on this topic is "The Mark of Cain" [0]. It goes into a lot of detail and interviews with prisoners, as well as a good portion of the film focused on the tattoo traditions in women's prisons. [0] https://en.wikipedia.org/wiki/The_Mark_of_Cain_(2000_film) https://en.wikipedia.org/wiki/The_Mark_of_Cain_(2000_film)