Not just in politics, but there's a real problem with people just insisting on repeateded benefit of doubts that someone is operating in good faith...
Over and over again, I keep seeing people think that just because they care about facts and logic, that other people have to care about facts and logic.
That's not how a human brain works, it's never how our brains worked.
Human brains love explanations but hate thinking. If they've accepted an explanation and you try to talk them out of it with facts and logic, a sizable percentage of humans will get confused and just shut down cognitive thinking and fall back on emotion.
That's why so many trolls just blindly throw emotional charged labels around.
You can't say/do anything to change their minds, they've placed you in a box, and that box has a bad word on it. They'll never calm down enough to re-evaluate if that was the right box, now that you're in the box the only thing that matters is the label, they'll never look at anything else.
It's a very very simplified outlook, and once someone has that view it's incredibly difficult for them to dig out of it. Millions and millons of years of evolution have reinforced that false positives don't matter and it's safer to assume the box marked "enemy" only contains enemies.
A false positive means you don't interact with an outsider, but thinking an enemy is safe might mean they kill you.
The problem, as usual, is people running on instinct because they weren't educated enough to prefer facts and logic. Global poverty makes it worse, because poverty makes our brains focus on short term and that means distrust.