1. Walking the wrong side of sidewalk, stairs
2. Standing in the wrong side of elevator and escalator
3. Failing to form straight evenly spaced queues with extra space in front of it for people to walk around it
4. Being loud in public transport or yelling in public, making sounds in public like munching, chewing, wheezing and other unnerving sounds, having notifications with sounds, phoning, making that slurpy sound when your nose is runny, besides obvious sounds like burping or farting - these are marks of barbarians
5. Eating and drinking things that smell in public (not just bad smell but any smell) especially in public transport, not limiting eating in public to fixing hunger but eating recreationally unless it is a place designated for it like outside a restaurant
6. Speaking in a daring manner to strangers (I am not your pal to call me bro or dude), speaking languages other than the national majority language in public
7. Failing to place luggage and big things they carry under the seat in public transport, taking up more seating space than necessary, sitting nonchalantly and making physical connection with people who seat next to them or touching their belongings
8. Smelling like ciggies in public, like alcohol, smelling like human excrements, failing to bathe or take a shower for long days but also not using perfumes whose strong scent makes the environment unable to peacefully travel unbothered by pungent smells whether "bad" or "good" smells
9. Blocking way with shopping carts, belongings, bags or backpacks on the back, or body itself
10. Chewing when talking to people
11. Yawning with mouth open
12. Eating ice cream or bananas in public (it looks terrible)
13. Starting up a complaint with an assumption of guilt (instead of respectfully questioning and waiting for more evidence of fault to slip up before judgement)
14. Having urge to and complaining about stuff that is obvious instead of proposing solutions (there is no point in breaking harmony even further by being frustrated)
15. Littering with things that don't disappear for long like plastic, heavily modified paper or glass (receipts or used tissues are acceptable to throw into tall grass or rivers because they disappear fast and serve the plants, not toxic)
16. Letting dogs go entirely unsupervized especially without a muzzle on its mouth (I had way too many encounters with angry dogs, they are the sole reason I carry a spring knife or surgical scalpels when outside each time I leave the house, I hate dogs and I despise people who own dogs)

Now more specific, that would elevate a civilized society into saint society
More nuisances:
17. Not controlling dogs and they bark at everyone, loud sounds are to be avoided, and dogs barking is disrecpecting people on behalf of the owner (I feel disrespected each time a dog barks at me and I want to restore my dignity it by gutting the dog, I feel disgust towards the owner each time and I do not forget it and do not forgive it)
18. Failing to deliver promises as the host, or as initiative giver (heavily losing credibility and respect, preseting themselves as not a serious person and as a liar. If you spark an initiative you either deliver each expectation in their entirety or cover yourself in shame).
19. Inviting people to your house who are not your close family or extremely close friends of decades (showing people who are not entirely on your side into your house is a death wish)
20. When inviting people from core inner circle into house the entire visit - failing tatemae - (visit is not entirely preplanned, family is not entirely disciplined what to show and say and how to behave around the visitor, showing more house than necessary, failing to tend as a host, having a house that is not perfectly cleaned and fresh smelling and failing to set it up in a way that it looks rich and efficient, or at a very least pleasant)
21. Showing lack of privacy in public (like blasting sounds and songs from apps without any regard, browsing phone or other device in a manner that everyone can see the screen - the assumption is if there is nothing you hide then your personality has no depth and no self control - very bad signs)
22. Showing or hinting at own impatience in public, forcing your way to exit or enter buildings and public transport first at all cost instead of doing it orderly
23. Showing power level in public (there is a fair chance of presenting yourself as arrogant and ignorant egocentric that instantly repulses anyone in immediate environment who is listening whose power level is even higher who could help that person grow in that field, this frustrates the better person who not only does not feel a duty to pass more knowledge and experience on that loud enthusiast leading to information and experience loss on societal scale, besides growing hatred and contempt towards newbs as a group which benefits nobody)
24. Giving people any excuse to accuse you of anything (if you do not wish to be bothered by anyone then give them no reasonable suspicion of fault, this creates chaos and it benefits nobody - it is not to pretend to be a saint or compare yourself to others but purely because people getting angry benefits nobody)

This is for collective self improvement. I can't figure out more as of now. I wish for heyuri to expand this list and contest my observations. No cynicism or ragebait intended.

I picked the image because I find it interesting looking