There do seem to be a lot of "isolated" incidents of poor security. This would be funny if it wasn't so serious.
I assume if some safety related ground handling work such as fuelling or baggage handling is done badly the aircraft captain has the authority to have it done again.
Question: Does this authority extend to security?
If so much effort is made to search the halt and the lame aircrew and now nursing mothers, who could be getting through. It might concentrate a few minds if a few plane loads were re-screened. I would put up with the delay if the captain ( not the aiport ) explained the reason.