The other day I was in the emergency room for an asthma attack. The guys across from me got into an accident due to a dui, and we're all going to be arrested later (so they couldn't leave). When it was my time to check out and I approached the exit, I could hear someone sprinting behind me, and a loud "STOP!". I turned around and there was an officer that was literally seconds away from tackling me from behind.
The nurses had just barely stopped him in time. Suffice to say, I almost shat bricks.
Another time a cop pulled me over, I found a safe place, stepped out of the car and locked it, and then sat on the curb next to my car. They then threatened to shoot me if I didn't get back in my car. I don't even think he was worried about me being a flight risk or a danger, he just really wanted to search my car, and that made it more complicated. Luckily, I was fine. I'm a bit of a poor redneck (litteral redneck, I work outside), and fuck, cops really don't like you when you look poor like that.