Diffrences Aren't Loud

In The Pedestrian there was a man who was walking in sneakers while everyone else was inside their dark house and the streets were almost filled grass in the cracks cause no one had used them for a while. A police car came to the man and asked him questions like why is he out there and walking. The man doesn't have a wife or a TV and the police asks hi to get in the car, surprisingly no one was in the car but now he was the only one. I think that if we weren't aloud to walk outside and we just got arrested and if i was him I think I would have just ran cause there is no one in there right. Why was he the only one who was different from the others, not anyone one else even just 1 person?