Does that mean that if someone is known, or looks familiar, you can't screen them?
It is not suggested that you can't screen someone that is known, or familiar, just that you can't work outside the rules...ie, "Gee, I'd like to put my hands down Pamela Anderson top to see what she is carrying, so I will target her outside of random".
Really, a bit of common sense must come into play...2005 saw a huge political ****e fight between AUS and PNG when some "numby" made the then Prime Minister of PNG, Sir Michael Somare take of his sandals, so they could be checked for what ever.
And in this current case, did said Security guy seriously think that the Foreign Minister of Australia suddenly get radicalised and was going to do a hijack.
I put up with this targeted crap on a very frequent basis... in Uniform, with an ASIC to boot, but I accept that as part of the job, but seriously, to TARGET our Foreign Minister, get real!!!!