I'm not exactly sure what you are asking here. Specifically, are you interested in Stalin's role (or lack of role after his death as it were), or are you simply using his death as a marker for the time period that interests you?

Also, "only the Suka who interfaced with the government" as opposed to who? Other criminals? And what do you mean by "interfaced with the government" that seems very broad and imprecise to me.

I understand the topic you are asking about in general, but I don't understand specifically what you are trying to get at with this question, so if you can clarify things I'll be happy to give it a shot.