I must correct myself, it is called The Red Flag, written by an Irishman in 1899, so it actually predates humanity’s knowledge of the true depths of depravity its tenets would unleash on mankind. I think before the Lenin purges there might have been a little bit of room for idealism, though the French revolution should have been a loud, clear signal of what was coming.
Thanks for the added info. May we never see socialism’s ‘possibilities’ here.