You really don't pay attention, do you?
Firstly, coercive use of metal detectors is an unConstitutional search.
Second, they don't fucking work.
http://www.csmonitor.com/USA/Educat...-shooting-raises-doubts-about-metal-detectors
All legal citizens have the right to bear arms.
Anywhere, anytime, without infringement. (Only in America.)
You also have the right to remain unarmed if you wish.
Anywhere, anytime, without infringement. (But not in Switzerland.)
There are nearly 200 countries in the world where you don't have those freedoms, or most of the freedoms that are defended by The Second Amendment, and if it's too large a responsibility for you I suggest you move to one of them and become a subject, rather than a citizen.