Ok, the prophecy states that things occur out of racial tension. Basically American on American violence that could occur overnight especially if something were to happen to Obama. If the city is in gridlock millions of people will have no where else to go but lock themselves up in there apartments. Their choices as well as their capacity to store items are very limited.
New York is our nation's largest city with the nations largest number of police. The city is also located near other larger cities with lots of law enforcement as well as military installations. I'm sure that since 911 occured NYC has drawn up plans on how to enforce matrial law if the need arises. It would probably become a pretty messy situation but doable and would include shutting all power, water, food and other essential supllies over a period of several weeks. They would basically starve the riotors into submission. What other alternatives would they have?