It's basically what
@PedroMendez said combined with what I've responded to
@Fingeredmouse. Sorry but I don't want to dive into the Islam comparison, it's for various reasons, one of them being me just not knowing much about the mutilation part apart from knowing that such thing happens.
So yeah, back to the communism though, what Pedro said basically encapsulates my problem with it, and not only mine as I see thankfully. Communism as a political system, in the European and global context always came with authoritarian regime and, for the death toll it has taken, I don't really think it should be split, and in the heads of people who actually have lived through communism in Central and Eastern Europe, it is not split. It will always come with the negative connotation, that's why you hear about 'socialist' model more often than the communist one. You can make claim that there is a country with a model that bases on nationalism and socialism, two concepts that separately bear no negative connotation most of the time, but if you mix them together you receive nazism, and without authoritarian part of it you can also pretend that 'there's nothing wrong with nazism'. Nobody sane will say that because there's an instant connotation to it, and righfully so, for some reason the same connotation didn't stick to communism, or actually it didn't outside of Eastern and Central Europe.
It will probably sound ignorant on my part but I think that people from countries who haven't suffered from communism won't fully understand this sort of logic. As I've said in my response to
@Fingeredmouse, once they've brought communist symbols to the anti-nazist/anti-white-supremacist/anti whatever the feck it was there rally, it's a symbol in a certain context and it's a symbol of mass murder on the scale that was as big (even if we take just USSR into consideration) as what the nazis did.