What would be some legitimate examples of a manager "power tripping" on a team member or the team?

I recently was moved to a new team and I have a new manager.

I was speaking with a co-worker on another team and mentioned that this new manager requires us to have webcams on during team meetings. As much as I dont like it, I can understand how this would be a legitimate and reasonable request.

My co-worker mentioned though "maybe its her way to power trip" which didn't really make sense to me.

What would be some legitimate examples of a manager power tripping on you or the team?

Maybe not even a manager but just general examples of some things people might do that would be considered a "power trip". I never really understood this idea.

Thanks!