My buddies who are cops are the biggest gossips I know. The suburbs around Des Moines all have there own police forces and officers I've If I put my "Dad Cap" on I would have tell all you kids "if you aren't doing anything wrong, why are you worried about a cop walking up to talk?" 
I gotta tell a story about this. Here I am, walking along a street in NE portland OR around 9:30 PM with a buddy of mine doing nothing wrong, except that we had long hair and white skin in a largely black neighborhood. Along comes a cruiser and stops across an intersection from us. Pop go the doors and a couple of officers step out, carefully staying behind the doors of the cruisers, hands on guns.
Cop: Hey can you stop for a moment?
Us (Stopping): yes
Cop (approaching with hand still on gun): Where are you headed?
Us: Home
Cop (Now standing near enough to begin patting me down): do you have any weapons or contraban?
Us: No, Why are you harrasing us?
Cop (while frisking my buddy): This isn't harrasment, this is what we call 'friendly conversation', So how's it going?
Other cop (while frisking me): do you have any ID?
Me: No, it's at home
Other cop: any weapons? what's that in your pocket?
Me: no weapons, just this nose flute (taking out plastic nose flute)
Other cop (pointing to the ring in my nose): what about that?
Me: it's a nose ring
My buddy: Are we under arrest for something or can we go?
Cop (standing solidly in our way): you can go any time you want.
My buddy begins to walk away but is physically stopped by cop, frisking recommenses
etc.
Long story shorter, they ended up letting us go after about 30 minutes but it was a HUGE hassle and we weren't doing anything wrong at all.