My experience was different then the post is directed at but I was pulled over/stopped while I was walking!
It was daytime and I kind of thought a police car was following me or at least seriously looking at me but as there were many 1 way streets it was not continuous. A few blocks later as I was nearing my car, it happened-they stopped and got out to talk to me. I was honestly clueless as to why… Turns out they were suspicious I was a hooker and possibly involved in drugs because the location I was at is known for this type of activity. They were great BTW. Of course I was polite and after they explained the deal I explained why I was there. I very much knew the area was sketchy and later that evening when it was dark would be meeting friends at a comedy club. I was walking to find the best possible choices to leave the club as it would be after midnight when I left and situational awareness is very important. We were all laughing within a few minutes and had a nice and quick conversation. I asked about the location I was parked for safety-got the nod OK and thanked them for being there and on the lookout.