[THJr]

In the U.S. this is often because someone can't work. When you're stuck in a poor area, job opportunities are extremely limited. Public transport is very limited, so you often can't get out of the immediate area to find a job, and most jobs are very restrictive about criminal history.

You can get something minor on your record, and be stuck out of work until you can get enough money to move closer to a place which will hire someone with a crime on their background check, which is now near impossible to do legally.

This situation can make one desperate enough to attempt crimes which can lead to murder, such as armed robbery.