They've done near-mass uprisings, at least, like 1918 to 1919, but yes, no real socialist revolution, it's true.
I suspect that as the USA and Europe lose more of their grip on Eastern Europe, Africa, Latin America, and Asia, we will see more strife in the imperial core (well, I certainly hope they lose more of their grip, but I'm cautiously optimistic!)
Hopefully, we agree on that, at least.
