Not wanting to tax the rich because "I might be rich one day".

"Let's go Brandon!" Bumper stickers.

Being a republican. Sure there are some educated grifters who decide to label themselves as republican, but your average republican voter is a mouth-breathing fucking idiot.

Believing that capitalism lifts people out of poverty.

"Whataboutism", or if you are unfamiliar with the term:

"The act or practice of responding to an accusation of wrongdoing by claiming that an offense committed by another is similar or worse"

People that use this mechanism are "poorly educated" and unable to hold a conversation and they should just be mocked by whatabouting even harder, so they can maybe understand that they're dumb and that's not how you should debate.

Example of the last argument I had recently with my dumb c*nt father:

• Me: You shouldn't idolize that politician, he evaded literally billions in taxes and that befalls on citizens like you
• Dumb c*nt father: Yeah? And what about that other politician?
• Me: What about the disappearing middle class?!
• D.C.F.: What...?
• Me: WHAT ABOUT THE BEES!?!

Wearing camo and American flag shit in public. Honestly just having American flags on anything now pretty much is the same as that read hat

Nationalism

Being poor and idolizing the rich.

I’ll take “poorly educated” over “educated and unwilling to learn or grow.”

People who are proud about their lack of knowledge on a topic as if that somehow means that they were not programmed prior to the encounter.

Any reference to "common sense", which really means "what I believe". Violating it is used as a universal rebuttal for any intellectually sophisticated argument.

Listening to loud music without giving a shit about the neighbours.

Being intolerant of those who don't think like you do.

Being a baby. What do they even know?

Those who always put loud music or talk as if they were alone in the bus/public places. Always the same people

Thinking that someone without a formal education is somehow beneath you.

Might not be a popular take but having an undefendable position like creationism does not necessarily mean "poorly educated." There are apologists who have learned proper reasoning skills and use their education to bend reality as much towards their will. I think most people would consider Jesuits and the like to be very educated but also very wrong.

As far as signs that someone is poorly educated, there are people who make up "big words" to give the impression of having a better education to other poorly educated people. Which backfires when someone with an actual large vocabulary walks into the room.

Being proud of not knowing things, and having no desire to change that.

People who think their dialect or language style is grammatically correct and others are wrong, because they don't personally known the grammar rules of any other dialect or language. They don't understand that language is alive and evolving and that the purpose of language is communication.

Bigotry and prejudice. Not necessarily uneducated, but certainly poorly educated.

Personal use of proprietary software in the 2020s. Or running a company to be completely dependand on dozens of unreliable and expensive proprietary software vendors.

MAGA Hats. Those people are dumb by choice. And that's less forgivable than people who just don't know any better.

People who litter. Throw their rubbish out the window of the car. Or who throw rubbish in public, like into drains or sidewalks.

It’s in the mentality, and I say the lack of education is the reason for it.

It’s sad to see the people of my country do this, and to see it with your own eyes.

Racist and intolerance to people different than them

Being poor or lower middle class and voting for right wing/conservatives. You essentially give away your hard earned money and give it to ultra rich and worsen the quality of your life.. usually because the right wing scares people to be afraid of other people and new phenomena.

regurgitating talking points from a third party and the inability to distinguish between divisive issues and issues of difference. I

am a college professor and pastor and when I teach theology there is a crazy high instance of people who just spit out exactly what their favorite celebrity pastor says and immediate decide that it trumps whatever you are saying. Then they are unwilling to yield any bit of their position and get offended that you disagree.

disagreements do not need to be so divisive. The constant need for affirmation shows that you actually have no idea what you are talking about

Generally not getting a lot of deeper jokes or references about important topics

Not trusting in science.

Edit: Since there are many comments, I would like to clarify my statement. I meant that you should rather trust scientists, that the earth is round / that there is a human-made climate change, etc. and not listen to some random internet guy, that claims these things are false although he has made no scientific tests or he has no scientific background. I know that there are paradigm shifts in science and sometimes old ideas are proven to be wrong. But those shifts happen through other scientific experiments/thoughts. As long as > 99 % of all scientists think that something is true, you should rather trust them then any conspiracy theorist...

Not understanding the marginal tax rate.

Confusing THEN and THAN. Credibility immediately drops.

Using an apostrophe in plurals. Don't know why but this one drives me insane.

Also they're/there/their and you're/your