Originally Posted by YuriTokoro
We are not told to never point out strangers who are different or talk about someone being different.
I got to know that you never point a finger at people when I was planning to go abroad for the first time. There were many different customs I didn’t know; e.g. holding the door open for the person who is coming after you.
I think Japanese ways may seem very rude to you because we don’t hold the door for the next person. In elevator, we don’t push the button for other people.
Here, like most of out of politeness acts "holding to door for the person coming after" changes from people to people I think. Some can wait for you holding the door or you can find yourself face to face with the door.