My first day on FTO and my first day in uniform I noticed that which you describe. I think a few of the stares where in disgust or displeasement, but the others were more of an infatuation for a lack of better words.
I think people are curious more or less. Especially when you walk in somewhere to eat, they want to see why you're there. Is it to arrest someone or to dine. Once you sit down to eat people pretty much mind their own business.
What really makes my day are the kids. They're so innocent and so curious. They'll just stare all day withougt blinking. You wave to them and their eyes get huge and you usually get a HUGE smile in return. I usually carry 'junior police' stickers to give to kids. Makes my day to make them smile..
Be advised, I'm mean nasty and tired. I eat concertina wire and piss napalm and I could put a round through a fleas *** at 300 yards. So why don't you hump somebody else's leg mutt-face before I push yours in.