The only difference is, I suppose, the fact that one comes from a people that got very close to experiencing the "social justice paradise" and the other is just a made up phrase by an internet troll. Otherwise, they are practically indistinguable.

I'm not a troll. And I don't think most people, including the majority of strident believers in social justice, would consider the 20th century Soviet Bloc to be a paradise.

Perhaps the more ideological wouldn't enjoy the Soviet union but they approve of and use their methods.

The current focus on purity of thought is remarkably like the communist struggle sessions, how they tortured people to correct their thinking not just to achieve a confession, how there was always room for more ideology and more purges as the party continually turned on its heroes.

Here's an example. At ~25s the officer talks about people who want to help (lower-case social justice) being faded out by people who know nothing of the situation and are just using it for political clout. He's black and trying to discuss the protests with black protestors and they're being interrupted by white protest leaders (upper-case social justice) who need to stoke conflict to remain in power.

https://www.youtube.com/watch?v=hm2aFTTuLek

I have no idea what this has to do with taxation. It feels like a culture war diatribe.

Do you believe that when Paolo Gentiloni is using the words ‘social justice’, to describe a goal he is evidently in favor of accomplishing via the EU, he is saying he intends to adopt the economic and social policies of communist Poland?

Because I think that is a fairly uncharitable reading of what he likely intends.

I don't even think the communist government of Poland wanted to adopt those policies. The problem with "social justice" is not the intention behind it but the actual implementation and what it requires. For example, here we don't go from country to country asking their citizens if they agree with the tax rate, instead we create an unelected global body that decides what the rest of the world is going to do (in this example raise taxes).