There has never been a state in human history more depraved and evil than the USSR.
Oh come on. I get what you're trying to communicate here, but come on. It wasn't even the most depraved and evil Marxist-Leninist state.
Stalin basically is a huge reason why the Communists won the Chinese Civil War though
What do you think a Chiang Kai-Shek -run China would have looked like? Imagine the people who carried out Taiwan's White Terror had the run of the whole of China.
Purge the Reds, Communists are the Islamic Extremism of the left and need to be snuffed out. Turn Taiwan into Git Mo