> Then you think about how the people must be treated to make this be true.

People who have all their needs met (food and safety, social, etc) tend to want to make the world around them better. I would wager the nice looking places are more likely to have well-treated people.

Places that look like dumps are the ones more likely to be populated by people who are treated poorly.

unrealistic expectation. The city is hyper–clean because anyone who litters is shot.