is this just atrocity propaganda, or was stalin actually a mass murderer? deleting someone from a photograph is not a good sign.
You're right, it's not healthy for a country, but considering the USSR was under the threat of (and eventually actual) war, and influenced by espionage and sabotage, it's at least understandable the party had this period of repression. Besides, the people, the workers in general, were not affected at all by this, most of those who suffered from repression were high-ranking party members.