I was questioned once. On the street, walking home from the gym, minding my own business.
Cop car pulls up behind me and the cop asks me to stop. I do, confused. She asked me where I was coming from, what I'd been doing prior, and if I had any tattoos (!). I answered each question, mostly because I didn't even know WHY I was being asked. Once she saw my tattoo did not match description (after radioing someone), I was let go. But not until she told me they were looking for someone who had just ROBBED A BANK, who matched my description (clothing and all) except for my tattoo.
They way it all happened, if I was brought in, I wouldn't have even been in the frame of mind to shut my mouth and ask for a lawyer. I would have openly talked to them!
It's scary.