"Political correctness" is an expression made up by those who do not believe that everyone deserves to be treated with equal respect.
Exactly! If the men or women I deal with day to day are respectful then I am equally respectful in return. UK Airport security personnel, by treating everyone as a potential terrorist, lay themselves wide open to the total disrespect and disdain of the traveling public. A modicum of common sense applied to their interpretation of the job description would go a long way to help but, sadly, common sense seems to be in short supply where these goons are concerned.