Questions where acting with consideration, tact, deference, or courtesy is important. Include other tags for cultural context! For questions regarding someone else being rude, use the "rudeness" tag instead.
This tag can be used for questions about a behaviour that is respectful and considerate of other people. Since it is a culturally defined phenomenon, therefore what is considered polite in one culture can sometimes be quite rude or simply eccentric in another cultural context. So, a cultural tag such as united-states or united-kingdom should be used with this.