One time, I met a D.C. traffic-directing cop in the line at the mall and I remarked how dangerous her job was. “I mean, people in D.C. drive so crazy,” I said. “You could get killed.” “Oh no,” she said, “don’t feel sorry for me. Feel sorry for the people in parking enforcement. They get screamed at, spat on, cursed out – you name it. It’s horrible.” I have to admit that this was the first time I’d ever had any sympathy for parking enforcement cops (also known as “meter maids”). I’ve always seen them as predators, scrounging around, looking...