If 100,000,000+++ in the 20th Century didn't do it, nothing will.
From Rudyard Kipling, a century ago:
In the Carboniferous Epoch we were promised abundance for all,
By robbing selected Peter to pay for collective Paul;
But, though we had plenty of money, there was nothing our money could buy,
And the Gods of the Copybook Headings said: "If you don't work you die."
People have to learn the hard way the reality is nothing like the theory.
One of Tito’s most prominent colleagues, Milovan Djilas, split with him when he realized Communists were creating a New Class and making inequality worse than it was before.
Personally, I am of the view human freedom is far too precious to be sacrificed on the altar of the ideal society.
And social justice means different things to different people.