Invited in, then shown the door (opens in new tab)

Imagine being invited to an event. You accept, set aside the time, and arrive at the correct time. You’re welcomed in, find a seat, and things get underway. Then someone asks you to leave. You explain that you were invited. They apologise, let you back in, and you sit down again. A few minutes later, you’re forceably removed. At that point it’s clear it’s not a misunderstanding. Someone has decided you shouldn’t be there, despite the invitation. It would feel awkward — and rather unprofession...