"tony roberts"
Once I was waiting to fly from London to Jeddah when a Saudi asked me if
I would carry some luggage for him. I refused and watched him walk along
the line of passengers until someone agreed. It was one of those
situations where I was uneasy but couldn't decide whether or not to
pursue it (this was a looong time before people started worrying about
terrorists)

So the plane is taxiing to the runway and I unfasten my seatbelt, walk
over to the nearest cabin attendant and told her what happened.

Back to the ramp, unloaded and I have to crouch behind a bunch of
sandbags with the police, trying to identify which box it was.
We eventually find it and blow it up - it was toys!

That's taking action. That is a case where you did 'know' something that
was unacceptable. You pointed it out and the pilot made the decision.

In a sense, you did the same thing I did in Houston but the pilot considered
it a show stopper.