Again, the question really is: is the person I'm looking at a potential "perp" or just another citizen? ; Wether the society we want is one in which we're all suspicious of each other (and therefore need to be armed to the teeth just in case) or wether we trust each other ...

A pretty sad state of affairs if the determination is that everyone needs to be armed ...

Actually, a pretty sad state of affairs that that's even a consideration.