Politically-engaged Redditors tend to be more toxic – even in non-political subreddits::A new study links partisan activity on the Internet to widespread online toxicity, revealing that politically-engaged users exhibit uncivil behavior even in non-political discussions. The findings are based on an analysis of hundreds of millions of comments from over 6.3 million Reddit users.
Tankies are leftist because the oppose private property and favor the state controlling the means of production rather than individuals or corporations.
You’re confusing authoritarian communism with social democracy and anarchism. Stalin was a leftist, he was also genocidal and authoritarian.