I wouldn't really much separate the workings of Mao, Stalin or Hitler by very much other than rhetoric. It's not about left versus right, but tyranny versus humanity.
"The crisis will end when fear changes sides" - Pablo Iglesias Turrión
"Austerity is used as a cover to reconfigure society and increase inequality and injustice." - Jeremy Corbyn
I love the NSA. It's like having a secret fan-base you will never see, but they're there, watching everything you write and it makes me feel all warm and fuzzy inside knowing that I may be some person's only form of unconstitutional entertainment one night.
Though I will say your argument above does read like the no true Scottsman fallacy. And regardless if you agree with their interp of communism (I don't), or not, that is how they still defined themselves
I really don't get these debates. Why are we interested in quantifying groups of people like this? What all of these regimes did was evil. They tried to wipe out whole classes of people and murdered millions. We can argue over how successful they were, but Pachendale is right, they all had the same exact aim, total power, no matter the cost and no matter how many bodies had to make up the foundation. They both monuments to the degradation and enslavement of their fellow man. To say which is more evil is to say look at a Labrador and a Golden Retriever and say which one is more of a dog. It's absurd.
Which were the Japanese?
Which came first?
What agreements did they have with each other?
You need an option "both".