This is a reminder about adding or editing tags.
Don't use tags that are not about your question. Again, the point of tags here is to help sort your question into clear, specific categories. Don't just slap a tag on your question just because it happens to mention a certain topic; only use tags that are actually about your question's topic. Tags that the question is not about don't belong.
(This is an excerpt from How do I correctly tag my questions? on Meta Stack Exchange.)
Specifically, if the question uses examples and changing the content of the examples would change the tags, those tags should not have been used originally. That is because, in those cases, the question "happens to mention a certain topic", but is not "about [that] question's topic".
It should always be possible, though sometimes difficult, to create a "This is about" statement to describe what tags to use.
For example,
This is about [trade] between the [united-kingdom] and the [european-union]
This is about the [senate-rules] for [impeachment] of the [president] of the [united-states]
This is about [international] [sanctions] against the [russian-federation] for [armed-conflict] in [ukraine]
Any text contained in brackets is a tag-name. Other "topics" mentioned are not important for tagging.
It sometimes happens that a poster will mention a country, person, or event as an example, but the question is not about that country, person, or event, specifically. In those cases, excess tags could/should be removed.