I don't understand the sentence "your persist in arguing about "dictatorship" instead of communism". Maybe i wasn't clear in what i meant by dictatorship, but i refer to the "dictatorship of proletariat" (https://en.wikipedia.org/wiki/Dictatorship_of_the_proletaria...) which is core to the communist doctrine.
You'll probably argue that this kind of dictatorship isn't to be understood in the common sense, but judging by the various communists thinkers that refer gladly to violence, as well as its historical examples, i'd say the difference aren't that clear.