Update: I plead the Fourth

I figured out why I was upset about that search. It was completely unwarranted. The other times I've been wanded or patted down, I had set off the metal detector more than once, usually by leaving something in a pocket and then forgetting I had a belt on. This time none of that happened. I didn't set off the detector once. I didn't have anything suspicious in my bag. Yet I was still searched.