You're shooting an After the End movie where almost everyone is gone, and the world has fallen into disrepair. You're telling the story of The Aloner or the last few people, so when you have to shoot in the city you can't have streets full of cars and people in the background. The thing is, clearing the streets of people, making sure lawns look unkempt, and other set dressing for the apocalypse [...] [tvtropes.org]