Probably a bunch of jobsworths who use their new found position of power to massage their egos....
Freud would probably have some excellent psycho-analysis verbage to describe this behaviour, but I'm sure most people can guess what it would be (or what they would like it to be, although a certain hand waving gesture would probably suffice
TSA "approved" locks can be bought in the UK for about £5 from shops like Graham Tiso (camping & climbing gear etc) Fairly funky little combination lock, with a slot for the master key.
Regards,
Shuttlebus