If you want to discuss history, sooner or later you have to reference historical information. Otherwise one can just make stuff up, and say Stalin, during the height of his political career, used to attend confession.
("Forgive me father, for I have sinned. I have shot at least 85 000 priests and destroyed more than 98% of the nations churches over a period of 12 years" .. this notion of yours of people just happily doing things in the privacy of their own homes while under the soviet or Khmer Rouge rulership shows that you simply don't understand the subject)