Serioulsly annoying security staff and giving a hard time it is beneficial because one may dream that should enough fuss is created something may change.
Obviously the main issue is that the no pax or crew should suffer and one must not lost its flight without recompensation. I think asking to see the regulations, asking to be searched by a female if one is male, move very very slowly...
And yes refrain from bying anything in the airport...
Rwy in Sight