Well constantly putting leaders who resulted in deaths into one basket, and naming one political ideology as an assimilated "source of evil" or "axis of evil" is one problem.

I mean by that logic people will believe Marx belongs to the realm of evil thinkers because history proves that a political theory is "dangerous".

History and politics is built on nuance and precise facts, not some broad idea of how to define an ideology. Ideology can be shaped in any form and is subject to interpretation, that's why it belongs to the realm of propaganda.

I'm not defending communism nor those leaders, but saying "communism is evil because mao and stalin were murderers" is just poor argumentation.