This is an honest question (not just to you, but to everyone, myself included). If you, personally (or anyone else reading) had approached the metro escalator with the last bite of a candybar in the wrapper and were told not to take it downstairs, would you have (a) shoved the last bit in your mouth and gone on downstairs or found a trash receptacle to put it in? Not a baiting question, anyone, just wondering what most folks here would do.
I would honestly probably shove the rest in my mouth, but I would also probably be respectful to the officer and proceed on. My guess is that she probably did something to the effect of flipping the officer off as she proceeded on. I was always taught that you don't have to respect the person behind the badge, but you have to respect the badge. I always give the officer the initial benefit of the doubt, simply because getting snotty with a cop is NEVER a good idea.