https://www.sciencedaily.com/releases/2019/09/190919125313.htm

Researchers have long known that bigger cities disproportionately generate more crime. Now a new study from Northwestern University and the Santa Fe Institute explains why: It's easier for criminals to find collaborators.

"In a big city, you have the potential to meet more distinct people each day," said Northwestern's Daniel Abrams, senior author of the study. "You're more likely to find an appropriate partner to start a business or invent something. But perhaps you're also more likely to find the partner you need to commit a burglary."