who am I, who are you, etc. to do something?

idiomPart ofwho

who am I, who are you, etc. to do something? — idiom

1. This is used to question someone's right or authority to do something.

1.idiom
Definition

This is used to question someone's right or authority to do something.

Example

Who is she to tell us how to run our business?

Who are they to decide what we can wear?