FuxxA leader so great that children were exploited to report their own parents to the authorities if they overheard them say negative things about the regime.
A leader so great that he can only achieve national development through the executions and imprisoning of tens of millions, whereas many other war-torn nations achieve it without loss of human rights.
A leader so great he "accidentally" tried to genocide the Ukrainian people. https://en.wikipedia.org/wiki/Holodomor
Anyone can be called great if they have supreme totalitarian power and complete disregard for human life. Was Pol Pot a great leader? Or Mao Tse Tung? Hell, are we gonna start saying the Kim dynasty was composed of great leaders? Real greatness comes from those who achieve prosperity without needing to install an oppressive reign of terror upon the very same people they swore to serve. Greatness does not come from whatever fetish for brutality you secretly bear within you. Ask the old oppressed peoples of the Soviet Union if they thought Stalin was the greatest leader. Ask the crowds who tore down the Berlin wall if they thought Stalin and his USSR successors were great leaders. https://www.youtube.com/watch?v=zmRPP2WXX0U
Even Lenin himself didn't want Stalin in power, but here we are trying to defend this man who would have you put into a permanent labor camp until you died from the cold Siberian winter, a psychopath who would not only kill you but also erase your memory from history. https://upload.wikimedia.org/wikipedia/commons/thumb/6/6e/Soviet_censorship_with_Stalin2.jpg/1200px-Soviet_censorship_with_Stalin2.jpg
Ask yourself which time period of Russia you would rather live in.
It's a school assignment... Not a real debate. No reason to get overly triggered about it.