This topic is very interesting. People from former Soviet states learned what and when to say. Sometimes in brutal inhumane way. Saying that dad brought some sausage or construction material from work was a thing kids learned not to say in public very early. There were many things no to say. Like Xmas or Easter celebrations were topic for family members only. Burial with a priest was tabu. Grandfather fighting Soviet occupation was a big secret kids never knew about. Knowing that having and reading some books were a way to have big troubles. You needed to get mature quickly to live normal life under Soviet occupation. It was really shocking when I arrived in West Germany that guys in their 30s were behaving like Soviet teens.