Capitalism's focus on profit makes it inherently evil, invariably choosing a path that will make the most money irrespective of whatever damage it causes to the environment and to the poor. Hence the need for crisis management linking environmental protection with nationalization of the country's power grid (for starters) while at the same time effecting real wealth redistribution.
Nuclear ruins everything. 0 carbon without dismantling capitalism and seizing the wealth of billionaires? What good is that?
Perhaps it is the opposite?
Perhaps the only way to build excitement and a winning coalition is to say we are going to tackle this external problem but we promise to bring prosperity and thriving to the people that are not winning with capitalism? After all that was the winning progressive strategies with previous US history with things like "The Square Deal", "The New Deal", "The Fair Deal", "The Great Society."
Of course all of this is empty air, merely slogans, but much of coalition building is giving promises and making people feel united in order to unite the "folks" to a singular goal, and then you need to deliver on said goal.
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Now I am not saying you are wrong, there are some people in any coalition that will match your description Mookie
But it is quite easy to "nut crack" and coalitions are always bigger than the sum of individual parts for a person is complicated and contradictory, thusly a group of people is even more complex.