It’s worth recalling that the Soviet state, which of course controlled all formal education, taught children that their first loyalty was not to their parents but to the state itself. A major street in Moscow was actually renamed in honor of a boy named Pavel Morozov who had informed on his father; when the father was condemned as a traitor, Pavel was killed by furious relatives. The regime treated him as a martyr and model for all Soviet children. The weird tale deserves to be better known here.

According to Wikipedia: Pavel Trofimovich Morozov, better known by the diminutive Pavlik, was a Soviet youth glorified by Soviet propaganda as a martyr. His story, dated to 1932, is that of a 13-year old boy who denounced his father to the authorities and was in turn killed by his family. It was a Soviet morality tale: opposing the state was selfish and reactionary, and state was a higher virtue than family love. His story was a subject of compulsory children readings, songs, plays, a symphonic poem, a full-length opera and six biographies. The cult had a huge impact on moral norms of generations of children. (There is very little original evidence related to the story.)