Many project some kind of technological miracle, e.g. on climate change, or a New Deal reincarnation to forestall anything like a super-radical communist revolution. But that misses the point: the issue of a ‘new communism’ or neo-communism is one of principle, beside any issue of crisis response: global warming.
The question has a stark simplicity: that of primitive accumulation. The legacy of capital accumulation is plunder, and expropriation as plunder of the commons. All ‘private’ property in this class must be returned to the commons by return-expropriation. All of the natural resources, for example, extracted since the Industrial Revolution and pegged as private property are thus illicit as a category, and will be returned to the commons. (We should include the clever swindle by Bolshevik style bourgeoisies that have faked expropriation to a new class)
The issue is fundamental. We can never achieve political sanity on the basis of current outcomes based on capitalism.
That’s a scary thought.
So was that of the abolition of slavery, ca. 1830/40, until it happened via the Civil War.