Some airport security staff harassing passengers, discarding metal items

Passengers do not carry scissors, nail cutters in their hand luggage since these are prohibited items, though it is very inconvenient especially if the passenger does not have a home at the destination.
So to avoid losing scissors, nail cutters, which cost money, passengers usually leave them at home.
However, it appears that the airport security staff is now harassing passengers at some airports and asking them to discard all the metal items in their luggage
Many women have tweezers for removing their facial hair, and the tweezers are blunt.
Yet showing the harassment the passengers faces, the airport security is now insisting on dumping the tweezers in the waste bin at the airport.