Received anonymously:

Over the last month, no fewer than 2 meat markets and 10 fast food restaurants have had their locks glued and/or windows smashed several times a week. A local Pizza Hut had its gas turned off at peak business hours.

Gluing locks is basically risk free, and insurance doesn't pay for lost business hours. These actions are small individually, but they add up. There's no excuse not to destroy the profit motive.

ALF San Francisco