I think the key word here is “arbitrary”. You do know that there’s a huge body of case law in the U.S. regarding what is and is not a justifiable search?
From what I can see, they’re actually trying to establish some guidelines. They may be fuzzy guidelines, but how do you know what they’re based on? Maybe there’s a high correlation between people picked up for terrorist activity and almanacs. Maybe they’re using the frigging things for book ciphers.
Gaspode is apparently against searching people soley based on apparent nationality or country of origin. Fair enough. But he also seems to be against adding incremental indicators (the possession of annotated reference materials in combination with apparent survelliance activities) as well. So I guess we just hope the terrorists decided wander around in public carrying submachine guns and C4 belts? Or would that also not merit a search?
As for “scared, petty, little people” – are you trying to imply that there is no terrorist threat? That 9/11 never happened? That there aren’t weekly proclamations from various terror groups that we should get our graves ready? I think it’s reasonable to be, if not scared, then at least very alert. Should civil liberties be trampled upon? No, but I don’t see any sign in the article cited by the OP that they are.