The man was walking his dog on the south side of 29th Street. The dog stopped. The man stopped. The dog squatted. It did its business. The man gathered the poop into a plastic bag. He and the dog started walking. Naomi said, "Excuse me! You're supposed to curb your dog, you know? That means your dog should pee and poo in the street, not on the sidewalk. Look at that ugly brown stain on the sidewalk." He said, "It'll wash off in the rain. I'm not going to bring a scrub brush with me to scrape off poo stains." She said, "You don't have to. Just curb your dog. This beautiful city is an extension of your home. You don't let your dog poo on your living room floor, do you? Then why do you let it poo on the sidewalk? The sidewalk is part of your extended home."