I don't really think think that knowledge makes people humble, and arrogance makes people ignorant: that stuff comes from deeper down. But a little knowledge gives people a bravado that more knowledgable people often don't have (called the Dunning-Kruger effect). And arrogance makes people not question their righteousness. So there's a correlation, even if it's not causal.
Igno-Arrogance : 10 items
Bitter Clingers quote -
❝ ... it's not surprising then they get bitter, they cling to guns or religion or antipathy toward people who aren't like them or anti-immigrant sentiment or anti-trade sentiment as a way to explain their frustrations. ❞
CNN on Trumpers -
❝ ...you can put half of Trump supporters into what I call the basket of deplorables. Right? Racist, sexist, homophobic, xenophobic, Islamaphobic, you name it. ❞
Gun Controllers -
Guns and Igno-arrogance -
Knowledge makes people humble -
Memes-Arrogance - Memes about Arrogance (or Igno-Arrogance or Dunning-Kruger) are here.
Progressives ruin everything - That statement is kind of a joke, but while part tongue-in-cheek, it is real. They don't have, they just always will. Why? There are some reasonable ideas, that taken too far, become very very unreasonable. Things like FISA warrants, Russia investigation, stop and frisk, abortion, immigration laws (both ways, first too restrictive, then too lax), justice reform, social safety nets, healthcare, hating Trump, Political correctness, homelessness (and remedies), protecting victims and hate crime, me too, and so on, and so on. If your voices are extremist activists that exaggerate or mischaracterize (or don't understand) a problem, and see the only solution as fascism (State control of private business or the individual), and they refuse to be moderated by reason or accept when it is failing, it will always end poorly. Some disasters may take longer than others, but with no moderation or checks and balances, it's just a matter of time.
Tea Party - The railroading of the TeaParty is a great example of FakeNews. The TeaParty started under Bush, as a bunch of bi-partisan people angry at rising debt, and it escalated under Obama's trillion dollar porkulus. The media mocked them as radicals, racists and domestic terrorists and called them TeaBaggers (after the sexual practice of sucking testicles), and after 4 years of false stories were able to drive-out the moderates and democrats, leaving mostly the religious right (as they were used to being bullied and lied about). If you read places like Wikipedia, or listen to the left-wing news, you'll get none of that context/backstory (or history of how they moved right over time), leaving readers/viewers with a view that's quite different from reality. But their treatment by the media/left was a great example of the confluence of ignorance and arrogance about them and their issues.