I'm not supporting looting as I made clear in my first post on this thread. I can make exceptions for the food and necessities (diapers & tampons things) in this kind of situation though. There is no water available in most locations and I certainly wouldn't be drinking what is floating around the house. But the idea of leaving an IOU is good to.
Did you read the latest "X2 Looters shoot NOPD..."? This is what happens when you do not enforce the law with a firm hand at the outset to get a handle on things. Now it is night and Katy-bar-the-door time.
No sob story "po folks" crap, this can turn into anarchy in a heartbeat. Time for swift, decisive and very strong reactive, overwhelming force. You do this for the safety and protection of the good citizens, and there are plenty of good citizens.
The criminal element must be crushed quickly and decisively, no group hugs.