I don't see how these questions could be relevant, nor confiscating electronics. And I may be showing my Yankee here, but I really do believe everyone has the right to NOT SAY SHIT TO YOU if they don't want. So "I decline to answer" is perfectly acceptable to every question.
I guarantee I could show this to some people I work with and they'd immediately fire off with "do you WANT biased people to be okay with beheadings to be here?" like that's some sort of defense or explanation.
I always liked the scene in "Enemy of the State" when will smith's character is being questioned and he answers with "inappropriate" questions and when one of the guys says "now that is..." "NONE OF MY GODDAMN BUSINESS! YOU'RE DAMN RIGHT. And neither is my relationship yours."