Gee, I remember the last NYC blackout - crime dropped, fires, mostly due to the use of candles rose
People were amazingly polite - and I know, I got to see a LOT of them, as I was helping out in a Red Cross ERV - by midnight, they had us out on the usualy "fire duty" - going to scenes of house fires to help out - not one of which was "live" by the time we got there - The next afternoon, almost everyone had power, and we were looking for things to do
Summer 2002 blackout in lower Manhattan - no real problems - some fun evacuating the area around the power plant due to asbestos fears - but the populace was calm
1998 blackout in NE Queens - that one turned into a party, at least in MY neighborhood - we broke out the BBQ (as did neighbors) and started cooking - improptu block party in the dark (well, we did break out a coleman lantern)hoods had problems