>The least remote, most-managed places have security locks on items over $15. It is impossible to run a friendly, neighborhood-run store when any new customer is a potential thief. When theft goes uncontrolled, owners begin to look at their customers with suspicion. Those who don't like theft leave for more peaceful places and are replaced by owners who will tolerate theft with a big insurance policy and force.

There's a street in northern Baltimore where you don't actually go into any of the shops. Instead, you walk into a foyer-mantrap hybrid made of bulletproof glass. There, the retail employees ask you what you want, you tell them, pay, and then they go get it for you. Experiencing it for the first time was bizarre. Not an area I felt safe parking my car.