The phrase "Question Authority" was used a lot during the Vietnam War. The slogan told people not to interact with vicious authorities.
It is expected to urge individuals to keep away from vicious offers to power. The term has consistently represented the need of focusing on the principles and guidelines declared by an administration to its population.
To believe a person is unqualified or incapable of their authoritative position.
When you question someone's authority, it's going to usually be because of a mistake the person in power made.
See, if someone's swim instructor didn't know how to swim themselves, it'd be hard to trust them to teach someone to swim.
I hope this helps, it's hard for me to explain, but I hope I got my point across x.
Have a lovely day.