I read Capital and some other bugs. Problem is that Marxism defined as 'class struggle' is essentially hate movement, they are defined by their enemy. Once they come to power and the 'class struggle' is solved, it does not have any more solutions. So it needs 'constant revolution'.
> For one, a dictatorship of the working class, such as direct democracy, is a cornerstone of communism but clearly did not feature in Soviet states.
It did. But 'working class' was defined as factory workers, but 90% of people were working in agriculture. Marxist solution was to convert everyone into factory worker and kill rest.
> It was a distortion by Stalin, I believe, since it's also called Stalinism.
Stalin was not distortion, there were other leaders similar to him, who would take his place if we would not exist. Also other countries followed similar fate (China, North Korea...)