In fact this is completely incorrect. The best way to keep large numbers of urban people alive is a free market economy in food ... I'm not sure how many times people have to witness a N. Korea or similar socialist famine to be relieved of the misconception that command economies are somehow more effective at feeding large numbers of people.
The break down of the monetary system is a separate effect but don't try and saddle the farmers who are actually trying to feed people, with the same failed fucked-up economic wonk theories that fucked-up the financial system.
Edit: ... and if you ever happen to end up in situation where you notice authorities are trying to fix food prices or command control over food distribution it is well time past to get out ...
While I agree with out in principle, people would start starving in a matter of days while a private supply system and transportation chain would take probably years to develop.
We don't have 'farmers' in the US. We have multiple square mile farms owned by huge corporations and run by two guys and some GPS enabled tractor-like-things. And these things consume a lot of diesel I might note. With a failed monetary system stripping 99.5% of people any money they might have it is unlikely that said corporations would desire to feed people out of the goodness of their hearts. And would be illegal besides under current corporate law.
I believe that the more senior of our leadership understands what would need to be done, and we see reflections of this in things like the NSA spying apparatus and other such clues.
For my part, I am adamantly against such control measures, but it is not because I don't believe that martial law and a command economy have no legitimate role in extreme circumstances. In my case it is because I see a great danger that such 'solutions' will persist for much longer than they need to.
I think the assumption here is a continued race further away from market economy through the crisis. You can not simply snap your fingers and say: Now lets try the market, you know it worked well in the 1880's... There will be hordes of people who (rightly) regard themselves as victims, and they will probably not be interested in economic principles or other principles.