Futurology

Oh no. No no no. The problem here is that you have some fundamental misunderstandings about... well, a bunch of things. Let's break some of this down...

For example, a lot of Republicans try to ban books on homosexuality, trans people, etc. from libraries / public schools. There are also a lot of Republicans who seem support some racist political policies.

Glad that you understand this. Let's set this as our baseline.

That leads to extremist views from the other side as well.

What is the "other side" here? The opposite of authoritarianism is egalitarianism. Maybe you are thinking "conservatives vs liberals" - but both of those things are right wing. You seem to be considering only a very narrow window of political ideology... and that entire window is right of center.

or example, some software development companies ban the use of the word “master” for the main Git branch.

Sweet jesus. Choosing your naming conventions is not a ban. Dear God. I am godsmacked by how absolutely out-of-touch and off-base this entire rant is. This is not even a political issue. Wow. Nobody is passing laws demanding software developers follow certain naming conventions. And if you don't see how the terms master-slave could be seen as icky and therefore people might opt for using different terms for their own projects... well, my dude, that is on you and only you. Wow. Just... WOW.

I think that’s a form of authoritarianism as well.

No. Wow. Just no. Not even close. See above.

Both examples are uneducated people who dislike something ...

Oh my god. This keeps getting worse. You keep using words like "ignorant" and "uneducated" but you just EXPLICITLY misrepresented software developers voluntarily choosing their own naming conventions and AT THE SAME TIME conflated it with formal, on-the-books laws banning books and oppressing vulnerable minorities. I just... I can't even... this is so deeply irrational and clueless... ignorant and uneducated even... there is nowhere for me to even BEGIN. You are flinging insults while proudly and loudly exemplifying the very things you are accusing others of...

The less extreme approach to educate people more, and for people to calm down, have open, constructive discussions. Trying to understand the person you perceive as an enemy can be very rewarding for both parties and for society in general.

So here's a little bit of that education you're asking for: The Republican and Democratic parties are both RIGHT WING PARTIES. Liberals are right-wing enablers who pretend to support left-wing ideals only insofar as they can use those to their personal benefit. The political spectrum goes far beyond the DNC in terms of leftism. You are spouting rightist propaganda and I think you don't even realize it. You've been duped.

Rightism is about consolidating power and authority. It's natural extremes are monarchism, oligarchy, dictatorship, and the like. Many things called leftist are explicitly rightist... see literally any country who current does (or ever has) called themselves communist. Did the state wither away? No? Not communist. Nationalizing everything under a single leader or ruling class is still rightist. Even a "benevolent monarchy" is still rightist.

Leftism is egalitarian. The power and authority belongs to the people. Consolidation is not tolerated. Because wealth and power are the same thing, both are Constitutionally regulated. Representative systems must be kept limited as a ruling class must never be tolerated. Wealth hoarding must never be tolerated. It's natural "extremes" are anarchism, direct democracy, and self-organized communism.

Between those is an infinitely complex web of systems and ideologies that try to balance freedom and liberty (leftism) with stability (rightism).

With this background you can start to see that, in American politics, you have extreme rightists (Republicans) and right-leaning centrists (Democrats). Leftists - actual leftists (like myself) - tend to vote democrat only because we have no other choice. If someone thinks it's okay to ban books, to deny others medical care, to deny others basic human rights, to restrict others personal freedoms when they do not infringe on or affect anyone else... then there is no dialogue or discussion to be had.

There is no compromise or meeting in the middle on such subjects.

There is no “misunderstanding” nor any situation where "maybe the fascists have a good reason for putting their metaphorical boot on my throat".

We do NOT surrender rights, freedoms, or liberties. You do not compromise on them. We do not discuss compromising them. Those who would oppress others in such a way have declared war on their fellow humans and countrymen. Until the attacks end, there is no room for dialogue.