Nothing will pour more gas on that fire than censorship.
I basically agree with your analysis on that point, and I'm resentful of Trump for helping to create that problem. But I consider big tech censorship to be the first step to an inevitable end of democracy, "destroying it in order to save it".
It's a really hard problem because the "anti-censorship" argument is also used by the side that wants to destroy democracy once in power.
Historically, Americans have succeeded at destroying ideologies by grossly impeding on free speech and other constitutional rights when there was political will.
Currently, I'm not sure there is a sign of political will to restore democratic norms by suppressing white-supremacism.
> Historically, Americans have succeeded at destroying ideologies by grossly impeding on free speech and other constitutional rights when there was political will.
Native American autonomy and agency, African Americans obtaining land after the Civil War or stimulus measures after the Great Depression, Communism...
Of course, the combination of limiting free speech for decades leads to the death of the ideology because no one picks it up.
> Native American autonomy and agency, African Americans obtaining land after the Civil War
Unfortunately these were suppressed with violence, far more than mere censorship. I don't think these causes are dead at all, however. Many Native Americans still pursue these goals and occasionally enjoy victories, while the other cause has changed with the times and shifted focus from land to a more vague idea of reparations.
> stimulus measures after the Great Depression, Communism
I don't think those are dead at all. They may not be especially popular among normal people, but one can certainly get elected and openly preach violent revolutionary ideology like "We are coming to dismantle this deeply oppressive, racist, sexist, violent, utterly bankrupt system of capitalism, this police state. We cannot and will not stop until we overthrow it and replace it with a world based instead on solidarity, genuine democracy, and equality – a socialist world." [0] The organizers of BLM have explicitly stated that they are "trained organizers, trained Marxists" in the context of BLM's having adequate ideological direction. [1][2]
I basically agree with your analysis on that point, and I'm resentful of Trump for helping to create that problem. But I consider big tech censorship to be the first step to an inevitable end of democracy, "destroying it in order to save it".