A chilly, distant demeanor. Is it an asshole that hates you, or is it an introvert that just wants to go home?

"I'm just asking questions." Could be a child, could be a moon-landing conspiracy person.

Not being a conversational person.

I don't do small talk very well and I very quickly run put of things to say to someone I don't know so I don't like to just talk rubbish with someone, I prefer to remain quiet and get on with what I am doing.

I don't mean that the person isn't worth talking to or I don't like them, if they need something from me or have a question then I'll galdly answer or help them, but almost everyone takes it as a slight against them when i dont want to engage in idle chit chat and assume I'm an arsehole when I'm really not trying to be.

Parking in a handicapped parking spot and having no visible disability.

Women speaking up and demanding to be heard.

Offering a concise answer to questions, without softening language.

Setting up boundaries.

Saying no and not backing down from it

Being bluntly honest. People who are neurodivergent can struggle with being "politely dishonest" and can tell you what they think in a very blunt manner without meaning to offend.

Not engaging in small talk. Again, people who are neurodivergent tend to prefer talking about things that fascinate them and can have a hard time understanding the point of talking about just whatever.

Struggling with being on time, struggling to focus on someone or something, struggling with eye contact. In general, neurodivergent traits tend to be seen as "asshole behavior" because they are abnormal and don't conform to society. People who aren't normal tend to be viewed as assholes because how dare they inconvenience me by being different.

Source: personal experience as well as listening to the experiences of others. I've been hit with all these things at least once and accused of being an asshole, aloof, and/or self-centered.

The fact that they have a record.

Look for a pattern, not a single instance. And yet companies and people hold bad decisions of the past against most folks.

Unrequested advice. Sometimes it is warranted after all.

Well for one, I wish I could tell people no when they ask me to social events without being interpreted as an asshole

Someone who's assertive (not to be mistaken for someone who thinks they're assertive and really is just an asshole).

Someone offering constructive criticism.

Especially those two put together.

Honesty.

Asking a dog owner to use their leash rather than letting their dog walk up to you or your kids.

Refusing to engage.

Not agreeing to false logic (say, out of pressure to be polite or non-confrontational), especially when the next step would be doing something based on that logic. People sincerely don't understand why deceiving you once like this won't work another time and think it makes you an asshole.

Someone stating their opinion.

I turn the question around... people who are clearly liars, deceivers... politicians and businessmen that people line up to vote for with their money or public votes. You really wonder what people think an "asshole" is when you see the kind of politicians that get massive support in a population - to a point people have their photograph on the wall of their workplace or home, put stickers on their cars, etc. to support people that are clearly monstrous. A lot of people do not seem to like to study the crowds of Europe 1930's terrible leaders and just how many lined up to cheer on such persons.

The scientists a person believes also is a huge indicator of who they consider to be an 'asshole'. Just passively listening to people who support denial of climate change, denial of microscopic germs and virus, etc. The enthusiasm that followers to non-factual science seem to be very high, and they draw crowds in ways that fact-based science does not seem to do.

Being late to something.