And if someone challenges you on it, simply ask them: Are you saying that I should be profiling? Are you nuts?
Hell, some may even find being the subject of your investigative attentions flattering (but don’t count on it).
I’m only speaking slightly tongue in cheek here. A little bit of salesmanship is in order and, just as placing a different emphasis on any one word can change the meaning of the whole sentence, so too can the manner in which you recite your script. A nice, easygoing smile will probably put the average motorist at ease while an assertive no BS presentation might well let the parolee know he’d best not be jiving you.
Whatever tack you take, don’t be self-conscious or insecure. Anything that makes you appear unsure of the legitimacy of your actions will only embolden detainees to challenge you on them. If you can reel off the questions quickly as though they are all too familiar to you, great, and if you’re able to recite the questions verbatim upon request, so much the better. Looks great in the field, on the stand, or standing tall in the watch commander’s office.
True, your detainees may elect not to answer your questions, and it would probably be in the interests of most low-life, non-law abiding citizens not to. Indeed, should you happen across the infrequent Professor Moriarty, Lex Luthor, Hannibal Lector, or some other criminal genius, you may have to try another route or forego any further investigation altogether.